Year	current US$
1993	72000000
1994	53000000
1995	52000000
1996	55000000
1997	32000000
1998	22030000.6866455
1999	30209999.084472697
2000	74580001.8310547
2001	94339996.3378906
2002	133309997.558594
2003	74949996.9482422
2004	92260002.1362305
2005	72050003.0517578
2006	103239997.86377
2007	86779998.7792969
2008	402100006.10351604
2009	279119995.11718804
2010	204419998.168945
2011	164699996.94824198
2012	137059997.55859402
2013	175360000.61035198
2014	150169998.168945
2015	90650001.5258789
2016	80889999.3896484
2017	93769996.6430664
2018	98250000
2019	93019996.6430664
2020	69419998.1689453
2021	70730003.3569336
2022	59610000.6103516