precise calculation method has evolved at the same time as the name change. Use of GNP The United States used GNP as its primary measure of total economic activity until 1991, when it began to use GDP. In making the switch, the Bureau of Economic Analysis (BEA) noted both that GDP provided an easier comparison of other measures of economic activity in the United States and that "virtually all other countries have already adopted GDP as their primary measure of production". Many economists have questioned how meaningful GNP or GDP is as a measure of a nation's economic well-being, as it does not count most unpaid work and counts much economic activity that is unproductive or actually destructive. GNI vs GDP While GDP measures the market value of all final goods and services produced in a given country, GNI measures income generated by the country's citizens, regardless of the geographic location of the income. In many states, those two figures are close, as the difference between income received by the country versus payments made to the rest of the world is not significant. According to the World Bank, the GNI of the US in 2016 was 1.5% higher than GDP. In developing countries, on the other hand, the difference might be significant due to a large amount of foreign aid and capital inflow. In 2016, the GNI of Armenia was 4.45% higher than GDP. Based on the OECD reports, in 2015 alone, Armenia has received a total of US$409 million development assistance. Over the past 25 years, USAID has provided more than one billion USD to improve the living of the people in Armenia. GNI equals GDP plus wages, salaries, and property income of the country's residents earned abroad that also constitutes the higher GNI figure. According to the UN report on migration from Armenia in 2015–17, every year around 15–20 thousand people leave Armenia permanently, and roughly 47% of those are working migrants that leave the country to earn income and sustain the families left in Armenia. In 2016 Armenian residents received in a total of around $150 million remittances. Armenia's GNI, measured in US dollars, amounted to USD 13.5 billion in 2021, according to the National Statistical Office. This is an 8.23% increase over the prior year. GNI in USD terms in Armenia has historically ranged from a record high of USD 13.8 billion in 2019 to a