Year	current US$
1970	25100000.38
1971	14500000
1972	24000000
1973	24000000
1974	26799999.24
1975	28000000
1976	112000000
1977	123599998.5
1978	131600006.10000001
1979	161300003.1
1980	183100006.1
1981	182899993.9
1982	190000000
1983	195000000
1984	205000000
1985	242000000
1986	225399993.9
1987	273100006.1
1988	288799987.8
1989	300500000
1990	314799987.8
1991	329500000
1992	346600006.1
1993	758099975.6
1994	797500000
1995	839200000
1996	962700000
1997	1142200000
1998	1405800000
1999	1631100000
2000	1838800000
2001	1981800000
2002	2194300000
2003	2325400000
2004	2501200000
2005	2719200000
2006	3053800000
2007	3397000000
2008	3605500000
2009	3414700000
2010	3887000000
2011	4240700000
2012	4262100000
2013	4485500000
2014	4810400000
2015	5196200000
2016	5508400000
2017	6177800000
2018	6817700000
2019	7420600000
2020	8331600000
2021	10742800000
2022	10278100000
2023	10500000000