Year current US$ 1970 70000.0002980232 1971 59999.9986588955 1972 39999.9991059303 1973 59999.9986588955 1974 790000.021457672 1975 579999.983310699 1976 670000.016689301 1977 1110000.01430511 1978 2579999.92370605 1979 4000000 1980 3279999.97138977 1981 1980000.01907349 1982 3039999.96185303 1983 1529999.97138977 1984 5679999.82833862 1985 3700000.04768372 1986 7469999.79019165 1987 7940000.05722046 1988 12779999.7329712 1989 13279999.7329712 1990 13880000.1144409 1991 5599999.90463257 1992 10779999.7329712 1993 17850000.3814697 1994 6980000.01907349 1995 6550000.19073486 1996 9260000.22888184 1997 6380000.11444092 1998 7789999.96185303 1999 3630000.1144409203 2000 1600000.02384186 2001 4199999.80926514 2002 1840000.0333786 2003 3670000.07629395 2004 5510000.228881841 2005 7550000.19073486 2007 119999.997317791 2008 140000.000596046 2009 129999.995231628 2010 2769999.98092651 2011 129999.995231628 2012 9000000 2017 2819999.9332428 2018 7079999.92370605 2019 15949999.8092651 2020 23979999.5422363 2021 25870000.8392334 2022 34819999.6948242