Year	current US$
1992	49700000
1993	58500000
1994	45000000
1995	103200000
1996	152000000
1997	149600000
1998	173244748.365378
1999	289088230.3652
2000	422612056.816134
2001	517347950.722444
2002	596463053.992156
2003	541177339.0733622
2004	787728407.0141973
2005	1063595731.80492
2006	1271905885.34065
2007	1395796175.71712
2008	1494854040.35436
2009	1746438777.234725
2010	1917264642.064085
2011	2602667173.106928
2012	3054342988.2806816
2013	3354070627.041885
2014	3713397656.1314893
2015	3783902298.365975
2016	3847433049.086204
2017	4390555769.438676
2018	5248750565.113832
2019	5854347991.515461
2020	1637146797.362187
2021	648458948.2485226
2022	2246221579.7749057
2023	4104395367.5537376