Year	current US$
1990	49284192.2022709
1991	34716418.9207987
1992	33697296.9003901
1993	35137464.7660871
1994	39739241.6012484
1995	46642892.7776565
1996	59298610.4968673
1997	66972405.2196067
1998	54104901.2347209
1999	72029420.3034747
2000	85804814.5742242
2001	70991720.7821524
2002	81205494.9815189
2003	85075994.3986493
2004	101606125.535201
2005	138365981.071494
2006	174661213.451423
2008	289207188.563542
2011	277707103.799043
2012	302715935.424071
2013	301390077.723558
2014	286789103.442347
2015	214033933.621106
2016	197432635.009805
2017	236003453.612067
2018	265497280.864796
2019	265111893.178099
2020	219229369.108764