Year	current US$
1986	11750000
1987	11720000.27
1988	19729999.54
1989	18329999.92
1990	20400000
1991	20940000
1992	21570000
1993	19920000
1994	22240000
1995	10430000
1996	11261000
1997	14400000
1998	22930000
1999	17927620
2000	26910849.5027344
2001	36833045.6733922
2002	17810000
2003	46376410.9846028
2004	47950000
2005	59860000
2006	51600000
2007	38960000
2008	55510000
2009	44870000
2010	40980000
2011	38810000
2012	50720000
2013	80680000
2014	35857981.1513977
2015	25699500.5148516
2016	33870677.1223563
2017	27780000
2018	22890000
2019	82690000
2020	22620000
2021	43550000
2022	134925700