Year	current US$
1980	0
1981	0
1982	0
1983	0
1984	0
1985	0
1986	0
1987	5000000.1192092905
1988	31099999.845027898
1989	106570000.724867
1990	210300001.172349
1991	246249997.446314
1992	383180001.305416
1993	239470000.099391
1994	235650004.664436
1995	217160000.56825602
1996	329639996.558428
1997	231509999.68126398
1998	340300001.112744
1999	245730001.17018798
2000	138610001.27159098
2001	609049999.808893
2002	288040001.949295
2003	363570002.250373
2004	536000003.72528994
2005	637050004.132092
2006	528259996.047243
2007	894269997.963682
2008	1088390002.83368
2009	1436469981.92184
2010	953879995.51557
2011	594800002.237782
2012	229129998.512566
2013	411700003.195554
2014	124400000.939146
2015	19960001.1166185
2016	49059999.7397512
2017	127440000.234172
2018	64800002.30483709
2019	113479999.84026001
2020	79010000.4114211
2021	146399993.47738898
2022	249940003.26283282