Year US Dollars 1960 289999.99166 1961 2619999.88556 1962 4679999.82834 1963 2839999.91417 1964 2579999.92371 1965 990000.00954 1966 14350000.38147 1967 2970000.02861 1968 2119999.88556 1969 1149999.97616 1970 1669999.95708 1971 5900000.09537 1972 3890000.1049 1973 3069999.93324 1974 2630000.11444 1975 12579999.92371 1976 11470000.26703 1977 12340000.15259 1978 21690000.53406 1979 15989999.77112 1980 49279998.7793 1981 30209999.08447 1982 13029999.73297 1983 24579999.92371 1984 12600000.38147 1985 21020000.45776 1986 30829999.92371 1987 25930000.30518 1988 34659999.84741 1989 41349998.47412 1990 22360000.61035 1991 37189998.62671 1992 40049999.23706 1993 34599998.47412 1994 32349998.47412 1995 58060001.37329 1996 31260000.22888 1997 29040000.91553 1998 31760000.22888 1999 35580001.83105 2000 23969999.31335 2001 31139999.38965 2002 28950000.76294 2003 20790000.91553 2004 30360000.61035 2005 78720001.2207 2006 37540000.91553 2007 34180000.30518 2008 51409999.84741 2009 27319999.69482 2010 81599998.47412 2011 45130001.06812 2012 52409999.84741 2013 19270000.45776 2014 21049999.23706 2015 26159999.84741 2016 23879999.16077 2017 48860000.61035 2018 132520004.27246 2019 73010002.13623 2020 311160003.66211 2021 107980003.35693