Year current US$ 1972 959999.978542328 1973 1789999.96185303 1974 1529999.97138977 1975 4289999.96185303 1976 7250000 1977 3880000.1144409203 1978 4090000.1525878897 1979 5760000.228881841 1980 4119999.88555908 1981 3430000.0667572 1982 2950000.04768372 1983 3509999.99046326 1984 3390000.10490417 1985 3390000.10490417 1986 2269999.98092651 1987 3819999.9332428 1988 1809999.9427795399 1989 2680000.0667572 1990 6190000.05722046 1991 2799999.95231628 1992 5840000.15258789 1993 7340000.15258789 1994 3309999.94277954 1995 6630000.11444092 1996 6639999.8664856 1997 5409999.84741211 1998 4409999.84741211 1999 4750000 2000 2059999.94277954 2001 1830000.04291534 2002 2799999.95231628 2003 2700000.04768372 2004 2759999.99046326 2005 3470000.02861023 2006 5920000.07629395 2007 3640000.10490417 2008 3849999.90463257 2009 3329999.92370605 2010 3630000.1144409203 2011 3940000.05722046 2012 5400000.09536743 2013 6269999.98092651 2014 8020000.45776367 2015 7750000 2016 16420000.076293899 2017 16770000.4577637 2018 17000000 2019 14810000.4196167 2020 16510000.2288818 2021 80599998.4741211 2022 11010000.2288818