Year	current US$
1990	2133309657.02339
1991	2385066339.19726
1992	2505693223.87484
1993	2666249991.5875
1994	2646515682.53704
1995	3014263545.34347
1996	3023221297.80372
1997	2927268518.67304
1998	2766713073.77535
1999	2666802626.3935
2000	3234977651.66276
2001	2907227854.20362
2002	2727199402.78188
2003	2866154628.80952
2004	3075550754.60312
2005	3124027254.35998
2006	3454280413.45947
2007	3721516694.83588
2008	4238460426.20038
2009	4096228241.36772
2010	4261775406.62261
2011	4902352986.69342
2012	4971191118.95577
2013	5111086718.38998
2014	5343455729.27614
2015	6056754331.23465
2016	7212505250.22092
2017	7854041907.20892
2018	8034717660.5387
2019	7463893489.99378
2020	7315081229.84175
2021	7987952344.72234