Year	current US$
1997	3997132075.4716983
1998	3382144369.178662
1999	3104709563.543004
2000	3393714865.3789253
2001	3383383874.6267276
2002	2995507327.4124546
2003	3875170383.181996
2004	5027333202.511774
2005	5409530612.611641
2006	6328126538.246972
2007	8851137334.97958
2008	12165067485.592964
2009	11677571266.767649
2010	12080819297.023092
2011	14243983198.594357
2012	13008814596.717009
2013	13633391065.950333
2014	12971195908.16403
2015	11866028941.554546
2016	10623491738.774946
2017	12880673500.791937
2018	14190894258.871878
2019	17059027389.761267
2020	14561318344.184586
2021	16479144804.737957
2022	21922299729.893997
2023	24066920244.360825