Year	current US$
1988	208468808.59
1989	263516129.03225806
1990	482824698.3676366
1991	347452467.92170084
1992	352680000
1993	336399544.5164045
1994	289265049.3090779
1995	310578310.53859204
1996	316433121.9251971
1997	303576793.217684
1998	330329260.3407706
1999	399542970.37080944
2000	443343989.46737725
2001	479658074.0208946
2002	456817139.48902905
2003	488831951.85572606
2004	526239282.93552184
2005	595985209.1338828
2006	1025782583.9499146
2007	1040626609.2094209
2008	1175826841.9721348
2009	1203126920.5241034
2010	1234758667.1910996
2011	1329183073.719135
2012	1429032518.357137
2013	1511479282.2819421
2014	1696489450.6315753
2015	1792616888.2627456
2016	1921316515.845009
2017	1986629352.1991022
2018	1928077025.4680984
2019	1931875477.4060512
2020	1924285352.3808968
2021	2177333598.7034774
2022	2149471489.418638
2023	2168671723.2143836