Year	current US$
1970	4870000.021532178
1971	6190000.098198652
1972	15030000.00678003
1973	15039999.82029199
1974	22760000.25123358
1975	23800000.2130866
1976	42630000.43481588
1977	82880000.37148593
1978	110460000.6565453
1979	112469997.55874267
1980	164579999.04453754
1981	146809999.76210296
1982	153250001.8123538
1983	134929997.7608025
1984	164829999.94978303
1985	145490000.14550978
1986	217640001.97499987
1987	274289999.23914677
1988	308649996.5880066
1989	268790000.71063644
1990	311910001.09165895
1991	258450001.40741467
1992	370779995.2626228
1993	326759999.5881318
1994	293369999.0063907
1995	418739999.8810143
1996	443869995.94606465
1997	415450000.61951566
1998	414729999.69497323
1999	251549999.27245083
2000	296089998.3067066
2001	494139993.6154483
2002	569579995.5129626
2003	707670002.7734041
2004	790470001.9285086
2005	1015060010.2357564
2006	818809996.5639411
2007	1081929996.518418
2008	1023769997.4626303
2009	783810000.6617604
2010	1029469997.0185753
2011	630650005.2195046
2012	532379991.6282296
2013	554669997.7815151
2014	492869993.2694434
2015	493710007.1161985
2016	527410001.7920137
2017	550290003.8547814
2018	681770005.9711933
2019	538939996.8627841
2020	592620005.9875845
2021	528820006.2140823
2022	646069998.1823561