Year	current US$
1989	30157525173.6624
1990	27936361220.1434
1991	21385821247.8893
1992	18551424092.0164
1993	19237315964.1634
1994	22017142752.3209
1995	27149199637.0124
1996	26287538752.1706
1997	26139770449.6058
1998	32009754298.9541
1999	27560484990.4259
2000	28785095121.0871
2001	31180205231.5699
2002	34449315208.7777
2003	43338076559.7678
2004	56378152041.5237
2005	76440208743.8577
2006	95650532679.6628
2007	137280108270.338
2008	175118435180.086
2009	141780419745.511
2010	136666315046.453
2011	151793816962.225
2012	140747157845.995
2013	149857204478.449
2014	159985480919.68
2015	142883559338.88
2016	148532749748.337
2017	169614904201.778
2018	195264564875.029
2019	203940206516.737
2020	208102913402.839
2021	233181340765.208