Year US Dollars 1960 209999.99344 1961 2670000.07629 1962 3170000.07629 1963 4010000.22888 1964 2630000.11444 1965 3819999.93324 1966 5219999.79019 1967 11949999.80927 1968 11770000.45776 1969 11819999.69482 1970 17000000 1971 17950000.76294 1972 27129999.16077 1973 35450000.76294 1974 29850000.38147 1975 25780000.68665 1976 19100000.38147 1977 25879999.16077 1978 34450000.76294 1979 25819999.69482 1980 43110000.61035 1981 35580001.83105 1982 36360000.61035 1983 42259998.32153 1984 30870000.83923 1985 32180000.30518 1986 28760000.22888 1987 31840000.15259 1988 25610000.61035 1989 27840000.15259 1990 28549999.23706 1991 27719999.31335 1992 33930000.30518 1993 22190000.53406 1994 21469999.31335 1995 19209999.08447 1996 17059999.46594 1997 21379999.16077 1998 25969999.31335 1999 27860000.61035 2000 25020000.45776 2001 20659999.84741 2002 31510000.22888 2003 23090000.15259 2004 18750000 2005 30350000.38147 2006 29540000.91553 2007 29719999.31335 2008 27190000.53406 2009 26729999.54224 2010 21719999.31335 2011 52409999.84741 2012 53580001.83105 2013 57119998.93188 2014 73580001.83105 2015 68000000 2016 63520000.45776 2017 78209999.08447 2018 80099998.47412 2019 57439998.62671 2020 58020000.45776 2021 65290000.91553