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In 1998, economic historian J. Bradford DeLong estimated the total GWP in 1990 U.S. dollars for the main years between one million years BCE and 2000 CE (shown in the table below). [6] Estimates from 2000 onwards are based on world GDP, PPP estimates in 2021 constant international dollars from the World Bank and subsequently converted to 1990 US$.
In a number of countries still using other systems, fuel economy is expressed in miles per gallon (mpg), for example in the US and usually also in the UK (imperial gallon); there is sometimes confusion as the imperial gallon is 20% larger than the US gallon so that mpg values are not directly comparable.
The first table lists countries by the percentage of their population with an income of less than $2.15 (the extreme poverty line), $3.65 and $6.85 US dollars a day in 2017 international prices. The data is from the most recent year available from the World Bank API.
The foreign exchange market is the global market where currencies are traded and exchanged. It is the largest and most liquid financial market in the world, with an average daily turnover of over $6 trillion. Learn more about its history, participants, functions, and challenges on Wikipedia.
In 1972 the Hong Kong dollar was pegged to the US dollar at a rate of US$1 = HK$5.65. This was reduced to HK$5.085 in 1973. Between 1974 and 1983 the Hong Kong dollar floated. On October 17, 1983, the currency was pegged at a rate of US$1 = HK$7.80 through the currency board system.
Estimates of world population by their nature are an aspect of modernity, possible only since the Age of Discovery.Early estimates for the population of the world [10] date to the 17th century: William Petty, in 1682, estimated the world population at 320 million (current estimates ranging close to twice this number); by the late 18th century, estimates ranged close to one billion (consistent ...
A Pareto chart is a type of chart that contains both bars and a line graph, where individual values are represented in descending order by bars, and the cumulative total is represented by the line. The chart is named for the Pareto principle , which, in turn, derives its name from Vilfredo Pareto , a noted Italian economist.
As a federal agency, the National Aeronautics and Space Administration receives its funding from the annual federal budget passed by the United States Congress.The following charts detail the amount of federal funding allotted to NASA each year over its history to pursue programs in aeronautics research, robotic spaceflight, technology development, and human space exploration programs.