Year current US$ 1972 19999.9995529652 1973 29999.999329447703 1974 189999.99761581398 1975 129999.995231628 1976 2319999.9332428 1977 1669999.95708466 1978 1759999.9904632599 1979 379999.99523162795 1980 689999.997615814 1981 270000.010728836 1982 1259999.9904632599 1983 959999.978542328 1984 980000.019073486 1985 2400000.09536743 1986 4280000.20980835 1987 8779999.73297119 1988 2309999.94277954 1989 6719999.79019165 1990 5579999.92370605 1991 8149999.61853027 1992 3269999.98092651 1993 6429999.82833862 1994 1509999.9904632599 1995 3710000.03814697 1996 2160000.08583069 1997 1940000.0572204601 1998 1399999.97615814 2001 1840000.0333786 2002 790000.021457672 2003 1559999.9427795399 2004 4369999.88555908 2005 1590000.0333786 2006 6090000.15258789 2007 6840000.15258789 2008 7510000.228881841 2009 8359999.65667725 2010 4900000.09536743 2011 4869999.88555908 2012 2569999.9332428 2017 4280000.20980835 2018 1210000.03814697 2019 0 2022 2210000.03814697