Aaron O'Neill
Research expert covering historical data
Detailed statistics
Populations of the United States and Soviet Union during the Cold War 1970-1990
Detailed statistics
Ethnic composition of the USSR's population 1989
Detailed statistics
Life expectancy at birth in the U.S. and Soviet Union 1970-1988, by gender
American Civil War: population of the Union states 1860-1870
Population of the Union States before and after the American Civil War in 1860 and 1870 (in 1,000s)
Population of the Confederate States in the American Civil War 1860-1870
Population of the Confederate States before and after the American Civil War in 1860 and 1870 (in 1,000s)
Number of casualties in major battles in the American Civil War 1861-1865
Number of casualties in major battles in the American Civil War from 1861 to 1865
Number of casualties at the Battle of Gettysburg 1863
Number of casualties at the Battle of Gettysburg in the American Civil War in 1863
Number of casualties at the Siege of Vicksburg 1863
Number of casualties at the Siege of Vicksburg in the American Civil War in 1863
Number of casualties at the Battle of Shiloh 1862
Number of casualties at the Battle of Shiloh in the American Civil War in 1862
Number of casualties at the Battle of Chickamauga 1863
Number of casualties at the Battle of Chickamauga in the American Civil War in 1863
Number of casualties at the Battle of Chancellorsville 1863
Number of casualties at the Battle of Chancellorsville in the American Civil War in 1863
Number of casualties at the Battle of Antietam 1862
Number of casualties at the Battle of Antietam in the American Civil War in 1862
Value of U.S. agricultural exports to the former Soviet Union 1990-2023
Value of U.S. agricultural exports to the former Soviet Union* from 1990 to 2023 (in billion U.S. dollars)
Vietnam War: casualties of the French Union in the First Indochina War 1946 to 1954
Total casualties of the French Union forces in the First Indochina War from 1946 to 1954
Doomsday Clock: minutes to midnight each year 1947-2024
Minutes to midnight on the Doomsday Clock every year from 1947 to 2024
Nuclear warhead inventory per country 1945-2023
Estimated number of nuclear warheads per country in each year from 1945 to 2023
Populations of the United States and Soviet Union during the Cold War 1970-1990
Total population of the United States and the Soviet Union in select years between 1970 and 1990 (in millions)
Abortion rate in the U.S. and Soviet Union 1970-1989
Abortion rate in the United States and Soviet Union in selected years between 1970 and 1989 (rate per 100,000 population)
Vietnam War: U.S. military personnel by branch of service 1964-1975
Total number of United States military personnel serving during the Vietnam War by branch of service from 1964 to 1975 (in 1,000s)
Fines for personal data transfers outside EU 2023
Penalties under GDPR for transferring personal data outside the European Union as of July 2023
Civilian deaths in Iraq war 2003-2024
Number of documented civilian deaths in the Iraq war from 2003 to 2024
IT data center systems total spending worldwide 2012-2024
Information technology (IT) spending on data center systems worldwide from 2012 to 2024 (in billion U.S. dollars)
Data center market size in Japan 2023-2028
Value of the data center market in Japan in 2023 with a forecast for 2028 (in trillion Japanese yen)
Cough, cold and sore throat treatments OTC sales value in Great Britain 2009-2023
Sales value of OTC cough, cold and sore throat treatments in Great Britain from 2009 to 2023 (in million GBP)
Data center market size in Japan 2023, by segment
Value of the data center market in Japan in 2023, by segment (in billion Japanese yen)
Number of Palestinian & Israeli casualties caused by the Hamas-Israel war 2023
Number of Palestinian¹ and Israeli² fatalities and injuries caused by war between Hamas and Israel in since October 7, 2023
Shares of crude oil imports to Italy from former Soviet Union 2010-2023
Crude oil imported to Italy from former Soviet Union as a share of the total imports in selected years from 2010 to 2023
Global biggest data breaches 2023, by impact
Most significant incidents of data breach worldwide in 2023, by number of breached accounts (in millions)
Global markets with highest data breach density 2023
Markets with highest data breach density worldwide in 2023 (in breaches per 1,000 individuals)
Economic growth of the Soviet Union in select periods 1966-1985
Growth of the Soviet Union's national income, industrial output and agricultural output in select five year periods between 1966 and 1985
Current year in various historical and world calendars 2024
Current year according to various historical and world calendars, as of January 1. 2024
Annual number of visits to historical and recreation attractions in Israel 2014-2023
Annual number of visitors to historical and recreation sites of the Nature and Parks Authority in Israel from 2014 to 2023
Share of data leaks in Russia 2023, by information type
Distribution of data leakage incidents in Russia in 2023, by information type
Mobile data and internet prices in Portugal 2021-2023, by basket
Mobile data and internet prices in Portugal from 2021 to 2023, by basket (in U.S. dollars)
Leading data center operators for cloud on-ramps worldwide 2023, by region
Leading data center operators for cloud on-ramps in data centers worldwide in 2023, by region
Data collection preferences of insurance customers in the UK 2024
Share of insurance customers comfortable with their data being collected and analyzed by their insurer in the United Kingdom in 2024
Importance of collecting selected behavioral data in marketing worldwide 2024
Importance of collecting selected behavioral data as perceived by marketers worldwide as of January 2024
Behavioral data marketers collect worldwide 2024
Share of marketers who collected selected behavioral data worldwide as of January 2024
Print personalizations' top 1st-party data sources for marketers in the U.S. 2024
Leading first-party data sources for print vendors' personalized communications according to marketers in the United States as of the 1st quarter of 2024
Reasons to collect mobile app data from global iOS users 2024
Function of data collected by mobile app publishers via iOS apps from users worldwide as of March 2024
Number of data compromises and impacted individuals in U.S. 2005-2023
Annual number of data compromises and individuals impacted in the United States from 2005 to 2023
All-time biggest online data breaches 2024
Most significant cases of data breach worldwide as of January 2024 (in millions), by number of compromised data records and individuals impacted
Largest deals for data center property sales in the U.S. 2023
Largest data center property sale deals in the United States in 2023
Companies using big data South Korea 2022, by type of analyzed data
Usage of big data technology and services among companies in South Korea in 2022, by type of analyzed data
Global cases of sensitive data spill into ChatGPT 2023
Number of cases employees worldwide input sensitive data on ChatGPT from February to April 2023
WWII: days taken for successful Axis invasions 1939-1941
Number of days taken for the successful Axis invasion of selected countries or territories during the Second World War from 1939 to 1941
United States: House vote results to declare war 1812-1942
Results of votes to declare war in the United States House of Representatives from 1812 to 1942
Death rate in the U.S. and Soviet Union 1970-1989
Death rate in the United States and Soviet Union in select years between 1970 and 1989 (rate per 100,000 population)
Life expectancy at birth in the U.S. and Soviet Union 1970-1988
Life expectancy at birth in the United States and Soviet Union in select years between 1970 and 1988
United States: Senate vote results when declaring war 1812-1942
Results of votes to declare war in the United States Senate from 1812 to 1942
Number of reunited family members divided by the Korean War 2000-2023
Number of reunited South and North Korean family members divided by the Korean War from 2000 to 2023
State of the Union address - number of viewers 1993-2024
Number of viewers of the State of the Union addresses from 1993 to 2024 (in millions)
Leading countries by number of data centers 2024
Leading countries by number of data centers as of March 2024
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