Year US Dollars 1960 79999.99821 1961 159999.99642 1962 529999.97139 1963 370000.00477 1964 430000.00715 1965 3940000.05722 1966 4659999.84741 1967 9560000.41962 1968 12109999.65668 1969 4920000.07629 1970 10489999.77112 1971 4920000.07629 1972 7519999.98093 1973 7380000.11444 1974 13590000.15259 1975 14909999.84741 1976 18959999.08447 1977 26149999.61853 1978 27799999.23706 1979 60340000.15259 1980 38569999.69482 1981 43060001.37329 1982 44759998.32153 1983 46229999.54224 1984 39860000.61035 1985 37529998.7793 1986 32400001.52588 1987 40650001.52588 1988 30670000.07629 1989 39049999.23706 1990 42750000 1991 27719999.31335 1992 35279998.7793 1993 41659999.84741 1994 41880001.06812 1995 39810001.37329 1996 37880001.06812 1997 36470001.2207 1998 32930000.30518 1999 30420000.07629 2000 26090000.15259 2001 32549999.23706 2002 30959999.08447 2003 31299999.23706 2004 26170000.07629 2005 38319999.69482 2006 27670000.07629 2007 35400001.52588 2008 26870000.83923 2009 39080001.83105 2010 61360000.61035 2011 74790000.91553 2012 66540000.91553 2013 72089996.33789 2014 74339996.33789 2015 72529998.7793 2016 86190002.44141 2017 89250000 2018 96900001.52588 2019 110220001.2207 2020 162889999.38965 2021 104819999.69482