Year	current US$
1988	710000.0083446499
1989	599999.9959021803
1990	1309999.9707192173
1991	14840000.031515956
1992	16220000.25771558
1993	60030001.56208871
1994	35099999.707192205
1995	56800001.05313958
1996	95710000.33803281
1997	64040000.75533991
1998	39709999.05467036
1999	72129999.45320188
2000	80370000.55983667
2001	120060001.12369655
2002	145779999.74973503
2003	134319999.48620796
2004	191670001.6669929
2005	252669992.05388144
2006	189659999.78221962
2007	263269998.99372458
2008	270040001.2414902
2009	285199996.8197196
2010	349360003.3801048
2011	398500005.15580165
2012	450820007.28510344
2013	477840001.04293257
2014	481379998.30953807
2015	494680005.87820965
2016	509480002.62863976
2017	480059997.4952638
2018	629109993.9122795
2019	527770000.00514084
2020	550570012.3570864
2021	766469990.9705665
2022	802790003.405884