| Year | Value | | 2022 | 7,261,043 | | 2021 | 7,166,071 | | 2020 | 7,031,714 | | 2019 | 6,818,934 | | 2018 | 6,609,560 | | 2017 | 6,421,369 | | 2016 | 6,239,089 | | 2015 | 6,053,443 | | 2014 | 5,864,448 | | 2013 | 5,672,845 | | 2012 | 5,484,802 | | 2011 | 5,315,117 | | 2010 | 5,171,130 | | 2009 | 5,045,194 | | 2008 | 4,929,058 | | 2007 | 4,817,499 | | 2006 | 4,701,520 | | 2005 | 4,574,619 | | 2004 | 4,434,958 | | 2003 | 4,281,983 | | 2002 | 4,118,962 | | 2001 | 3,954,279 | | 2000 | 3,795,007 | | 1999 | 3,644,909 | | 1998 | 3,507,430 | | 1997 | 3,383,630 | | 1996 | 3,270,727 | | 1995 | 3,166,638 | | 1994 | 3,071,033 | | 1993 | 2,982,594 | | 1992 | 2,901,713 | | 1991 | 2,832,029 | | 1990 | 2,774,989 | | 1989 | 2,729,077 | | 1988 | 2,694,367 | | 1987 | 2,666,686 | | 1986 | 2,635,174 | | 1985 | 2,592,971 | | 1984 | 2,539,556 | | 1983 | 2,471,983 | | 1982 | 2,393,186 | | 1981 | 2,316,524 | | 1980 | 2,250,373 | | 1979 | 2,193,560 | | 1978 | 2,148,180 | | 1977 | 2,109,276 | | 1976 | 2,059,412 | | 1975 | 1,988,732 | | 1974 | 1,900,270 | | 1973 | 1,794,149 | | 1972 | 1,678,275 | | 1971 | 1,574,878 | | 1970 | 1,499,980 | | 1969 | 1,454,323 | | 1968 | 1,439,236 | | 1967 | 1,449,476 | | 1966 | 1,457,121 | | 1965 | 1,437,561 | | 1964 | 1,385,056 | | 1963 | 1,297,632 | | 1962 | 1,185,936 | | 1961 | 1,080,656 | | 1960 | 1,005,454 |
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