Year	current US$
1990	916332835.670736
1991	971197601.06128
1992	1047294676.75949
1993	1094979815.15103
1994	1167541069.63472
1995	1266233907.68152
1996	1317156769.97303
1997	1386738975.50437
1998	1491591528.40211
1999	1551438056.14858
2000	1753329799.43002
2001	1874894900.87375
2002	1946756771.89047
2003	2105911147.86053
2004	2202713516.6144
2005	2371993732.52989
2006	2469545460.48232
2007	2686321249.76711
2008	2694777539.50683
2009	2616479710.52581
2010	2502882538.72362
2011	2521990217.43149
2012	2488400073.80817
2013	2342944089.41151
2014	2341801249.10874
2015	2364899491.31734
2016	2400687349.05447
2017	2499461914.61744
2018	2547401910.19617
2019	2446735246.56568
2020	2246242389.80314
2021	2534703583.73473