Year US Dollars 1961 239999.99464 1962 680000.00715 1963 1250000 1964 1509999.99046 1965 1620000.00477 1966 3019999.98093 1967 5179999.82834 1968 6739999.77112 1969 3500000 1970 6139999.86649 1971 6570000.17166 1972 14220000.26703 1973 15590000.15259 1974 24629999.16077 1975 50310001.37329 1976 39619998.93188 1977 64650001.52588 1978 49869998.93188 1979 72010002.13623 1980 53680000.30518 1981 55439998.62671 1982 55979999.54224 1983 62299999.23706 1984 47360000.61035 1985 51259998.32153 1986 46500000 1987 63409999.84741 1988 47840000.15259 1989 46569999.69482 1990 57400001.52588 1991 64260002.13623 1992 72629997.25342 1993 69639999.38965 1994 55779998.7793 1995 48470001.2207 1996 41279998.7793 1997 39419998.16895 1998 49639999.38965 1999 37740001.67847 2000 47369998.93188 2001 66269996.64307 2002 58950000.76294 2003 45310001.37329 2004 39349998.47412 2005 50459999.08447 2006 56889999.38965 2007 42349998.47412 2008 41209999.08447 2009 70370002.74658 2010 116839996.33789 2011 75230003.35693 2012 99260002.13623 2013 101500000 2014 86150001.52588 2015 99620002.74658 2016 92389999.38965 2017 139529998.7793 2018 128279998.7793 2019 126319999.69482 2020 166610000.61035 2021 75230003.35693