| Year | Value | | 2022 | 12,523,598 | | 2021 | 12,604,264 | | 2020 | 12,721,249 | | 2019 | 12,832,080 | | 2018 | 12,916,715 | | 2017 | 12,902,300 | | 2016 | 12,817,654 | | 2015 | 12,666,083 | | 2014 | 12,451,125 | | 2013 | 12,192,080 | | 2012 | 11,949,688 | | 2011 | 11,734,468 | | 2010 | 11,568,904 | | 2009 | 11,348,864 | | 2008 | 11,145,644 | | 2007 | 10,969,005 | | 2006 | 10,817,909 | | 2005 | 10,713,771 | | 2004 | 10,661,283 | | 2003 | 10,647,951 | | 2002 | 10,617,566 | | 2001 | 10,521,248 | | 2000 | 10,245,255 | | 1999 | 9,876,362 | | 1998 | 9,570,735 | | 1997 | 9,258,801 | | 1996 | 9,024,808 | | 1995 | 9,085,825 | | 1994 | 9,272,858 | | 1993 | 9,352,725 | | 1992 | 9,415,266 | | 1991 | 9,444,583 | | 1990 | 9,369,310 | | 1989 | 9,246,163 | | 1988 | 9,111,744 | | 1987 | 9,005,184 | | 1986 | 8,946,436 | | 1985 | 8,929,366 | | 1984 | 8,927,192 | | 1983 | 8,954,727 | | 1982 | 8,984,097 | | 1981 | 8,930,034 | | 1980 | 8,788,779 | | 1979 | 8,604,305 | | 1978 | 8,418,090 | | 1977 | 8,267,762 | | 1976 | 8,184,520 | | 1975 | 8,137,136 | | 1974 | 7,925,374 | | 1973 | 7,433,406 | | 1972 | 6,819,670 | | 1971 | 6,214,967 | | 1970 | 5,737,008 | | 1969 | 5,689,825 | | 1968 | 6,105,037 | | 1967 | 6,681,251 | | 1966 | 7,230,171 | | 1965 | 7,639,041 | | 1964 | 7,852,965 | | 1963 | 7,925,437 | | 1962 | 7,941,646 | | 1961 | 7,948,603 | | 1960 | 7,950,221 |
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