Year	current US$
1990	13998312009.803055
1991	18355846228.377647
1992	18245232691.535873
1993	19676709268.324738
1994	17203072612.86915
1995	15009147544.512072
1996	15588369963.369963
1997	18157121592.827415
1998	17263577529.973866
1999	18356615086.7487
2000	15545012592.983072
2001	14864543254.928404
2002	10975590551.181103
2003	8911746406.25
2004	11663381384.615385
2005	11576535041.291365
2006	13788814012.47895
2007	15892590553.956179
2008	18435600321.02991
2009	22437524630.365032
2010	21313967835.211704
2011	16651772002.169666
2012	23041706957.500435
2013	25022961534.711235
2014	24771809538.180542
2015	21548497332.049435
2016	24823482111.58333
2017	26312292835.51678
2018	26136456046.19013
2019	34510961099.59285
2020	33347807645.74948
2021	14160607386.322731
2022	13311587465.654167
2023	13193335242.099174