Year | Value | 2022 | 73,776,484 | 2021 | 70,558,234 | 2020 | 65,107,191 | 2019 | 59,744,584 | 2018 | 54,547,769 | 2017 | 51,300,380 | 2016 | 51,474,656 | 2015 | 53,239,939 | 2014 | 54,889,542 | 2013 | 55,412,426 | 2012 | 54,537,514 | 2011 | 53,116,219 | 2010 | 51,405,950 | 2009 | 49,200,481 | 2008 | 46,754,852 | 2007 | 44,028,267 | 2006 | 41,367,603 | 2005 | 38,900,524 | 2004 | 36,537,673 | 2003 | 34,613,383 | 2002 | 32,992,697 | 2001 | 31,828,022 | 2000 | 31,118,518 | 1999 | 30,600,423 | 1998 | 30,234,995 | 1997 | 30,022,951 | 1996 | 29,720,247 | 1995 | 29,358,515 | 1994 | 29,089,476 | 1993 | 28,815,699 | 1992 | 28,318,365 | 1991 | 27,608,863 | 1990 | 26,908,556 | 1989 | 26,208,495 | 1988 | 25,399,729 | 1987 | 24,639,179 | 1986 | 23,951,485 | 1985 | 23,276,740 | 1984 | 22,698,375 | 1983 | 22,096,804 | 1982 | 21,413,452 | 1981 | 20,854,070 | 1980 | 20,333,118 | 1979 | 19,688,007 | 1978 | 19,023,000 | 1977 | 18,488,241 | 1976 | 18,046,117 | 1975 | 17,629,531 | 1974 | 17,338,578 | 1973 | 17,167,662 | 1972 | 16,912,189 | 1971 | 16,527,738 | 1970 | 16,109,803 | 1969 | 15,687,420 | 1968 | 15,260,032 | 1967 | 14,896,188 | 1966 | 14,632,903 | 1965 | 14,417,792 | 1964 | 14,232,487 | 1963 | 14,115,476 | 1962 | 14,027,249 | 1961 | 13,969,106 | 1960 | 13,980,329 |
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