| Year | Value | | 2022 | 13,795,913 | | 2021 | 13,542,445 | | 2020 | 13,279,798 | | 2019 | 12,951,953 | | 2018 | 12,642,361 | | 2017 | 12,379,494 | | 2016 | 12,114,370 | | 2015 | 11,824,919 | | 2014 | 11,516,684 | | 2013 | 11,186,963 | | 2012 | 10,843,528 | | 2011 | 10,526,266 | | 2010 | 10,263,148 | | 2009 | 10,041,827 | | 2008 | 9,846,651 | | 2007 | 9,654,765 | | 2006 | 9,440,311 | | 2005 | 9,193,667 | | 2004 | 8,922,205 | | 2003 | 8,630,614 | | 2002 | 8,318,789 | | 2001 | 8,007,117 | | 2000 | 7,704,121 | | 1999 | 7,409,629 | | 1998 | 7,134,988 | | 1997 | 6,876,107 | | 1996 | 6,630,266 | | 1995 | 6,422,883 | | 1994 | 6,259,060 | | 1993 | 6,121,776 | | 1992 | 6,014,240 | | 1991 | 5,927,122 | | 1990 | 5,838,793 | | 1989 | 5,737,342 | | 1988 | 5,625,608 | | 1987 | 5,511,598 | | 1986 | 5,394,494 | | 1985 | 5,272,241 | | 1984 | 5,146,461 | | 1983 | 5,018,508 | | 1982 | 4,880,756 | | 1981 | 4,738,348 | | 1980 | 4,602,729 | | 1979 | 4,471,226 | | 1978 | 4,340,690 | | 1977 | 4,212,618 | | 1976 | 4,078,657 | | 1975 | 3,936,771 | | 1974 | 3,788,811 | | 1973 | 3,631,345 | | 1972 | 3,472,878 | | 1971 | 3,337,042 | | 1970 | 3,229,887 | | 1969 | 3,143,216 | | 1968 | 3,090,229 | | 1967 | 3,064,636 | | 1966 | 3,035,770 | | 1965 | 2,978,969 | | 1964 | 2,891,020 | | 1963 | 2,764,516 | | 1962 | 2,613,795 | | 1961 | 2,475,104 | | 1960 | 2,370,720 |
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