Year	current US$
1990	260528378.298345
1991	296149941.130794
1992	333291015.064928
1993	358683361.141803
1994	405776533.79629
1995	440116795.872883
1996	453324771.10371
1997	495027404.101964
1998	524359560.598607
1999	571582441.738951
2000	610305778.162811
2001	703886120.015431
2002	755124014.196436
2003	782729887.271244
2004	904339283.403397
2005	1013943053.46946
2006	1103570497.41345
2007	1193663011.61845
2008	1305119309.28255
2009	1346352003.00033
2010	1479209788.70536
2011	1668599931.49058
2012	1804548476.10974
2013	1861618987.54667
2014	1976136679.56185
2015	2100625987.68128
2016	2166184943.42064
2017	2376733753.10549
2018	2545051281.10882
2019	2914877393.96738
2020	2727829709.39575
2021	3061980715.84237