Year	current US$
1991	14000000
1992	3000000
1993	9000000
1994	5000000
1995	6000000
1996	9000000
1997	17000000
1998	13390000.3433228
1999	13859999.6566772
2000	9500000
2001	13880000.1144409
2002	17030000.6866455
2003	29200000.762939498
2004	34319999.6948242
2005	28870000.8392334
2006	50560001.373291
2007	58830001.8310547
2008	70949996.9482422
2009	90279998.7792969
2010	117139999.38964799
2011	114430000.30517599
2012	138839996.33789098
2013	160979995.727539
2014	149399993.89648402
2015	62209999.0844727
2016	57610000.6103516
2017	58430000.3051758
2018	66300003.0517578
2019	33279998.779296905
2020	81879997.253418
2021	82550003.0517578
2022	77370002.746582