Year	current US$
1970	30669999.122619633
1992	97130001.06811531
1993	169670000.076294
1994	272639999.3896483
1995	283610000.6103514
1996	202449998.8555907
1997	222520000.45776343
1998	251000000
1999	243000000
2000	253570007.32421932
2001	312579996.1090089
2002	343110010.147095
2003	378950008.39233387
2004	391350011.82556117
2005	298689994.8120117
2006	320449996.9482423
2007	336550001.14440906
2008	412290008.54492134
2009	405850002.2888182
2010	473999992.3706053
2011	531319999.6948239
2012	582653976.4404305
2013	456527770.9960932
2014	589247514.7247318
2015	669507953.6437997
2016	614097446.4416505
2017	780259967.8039556
2018	661720645.9045415
2019	667214496.6125488
2020	672888095.8557137
2021	632237880.7067866
2022	743217136.3830566