| Year | Value | | 2022 | 8,243,190 | | 2021 | 8,014,427 | | 2020 | 7,939,086 | | 2019 | 7,860,906 | | 2018 | 7,780,651 | | 2017 | 7,695,637 | | 2016 | 7,604,467 | | 2015 | 7,509,900 | | 2014 | 7,413,562 | | 2013 | 7,317,451 | | 2012 | 7,225,133 | | 2011 | 7,136,154 | | 2010 | 7,046,642 | | 2009 | 6,959,341 | | 2008 | 6,834,254 | | 2007 | 6,718,746 | | 2006 | 6,653,506 | | 2005 | 6,594,562 | | 2004 | 6,547,162 | | 2003 | 6,512,707 | | 2002 | 6,501,681 | | 2001 | 6,512,260 | | 2000 | 6,534,209 | | 1999 | 6,564,752 | | 1998 | 6,633,632 | | 1997 | 6,752,659 | | 1996 | 6,863,299 | | 1995 | 6,971,642 | | 1994 | 7,120,283 | | 1993 | 7,208,806 | | 1992 | 7,219,557 | | 1991 | 7,209,962 | | 1990 | 7,149,634 | | 1989 | 7,091,769 | | 1988 | 7,173,431 | | 1987 | 7,034,763 | | 1986 | 6,898,344 | | 1985 | 6,780,317 | | 1984 | 6,680,087 | | 1983 | 6,630,060 | | 1982 | 6,582,161 | | 1981 | 6,539,007 | | 1980 | 6,499,321 | | 1979 | 6,462,459 | | 1978 | 6,413,686 | | 1977 | 6,352,995 | | 1976 | 6,295,657 | | 1975 | 6,242,076 | | 1974 | 6,187,881 | | 1973 | 6,166,691 | | 1972 | 6,145,952 | | 1971 | 6,128,463 | | 1970 | 6,103,706 | | 1969 | 6,063,749 | | 1968 | 6,007,056 | | 1967 | 5,935,679 | | 1966 | 5,856,776 | | 1965 | 5,770,629 | | 1964 | 5,676,741 | | 1963 | 5,565,732 | | 1962 | 5,448,198 | | 1961 | 5,326,100 | | 1960 | 5,200,346 |
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