Year	current US$
1969	29399999.1416931
1970	32109999.179840103
1992	101680000.30517599
1993	100110000.61035201
1994	106480003.35693401
1995	119260002.13623
1996	99500000
1997	117779998.77929701
1998	123000000
1999	126000000
2000	126470001.22070299
2001	126559997.558594
2002	129100002.28881799
2003	139809997.55859402
2004	147069999.69482398
2005	143669998.168945
2006	142959999.08447298
2007	150819999.69482398
2008	176340003.967285
2009	185030006.40869102
2010	203910003.66210902
2011	210849998.474121
2012	244850326.538086
2013	205115516.66259798
2014	264452835.083008
2015	282574783.325195
2016	256797599.79248002
2017	331200286.86523396
2018	274248336.791992
2019	267611953.735352
2020	279529716.491699
2021	262270805.35888702
2022	318213600.15869105