| Year | Value | | 2022 | 8,638,206 | | 2021 | 8,543,371 | | 2020 | 8,463,875 | | 2019 | 8,368,685 | | 2018 | 8,356,285 | | 2017 | 8,596,286 | | 2016 | 8,953,364 | | 2015 | 9,083,950 | | 2014 | 9,124,698 | | 2013 | 9,060,855 | | 2012 | 8,752,093 | | 2011 | 8,396,023 | | 2010 | 7,979,424 | | 2009 | 7,595,562 | | 2008 | 7,274,854 | | 2007 | 6,951,438 | | 2006 | 6,641,454 | | 2005 | 6,348,202 | | 2004 | 6,071,525 | | 2003 | 5,811,286 | | 2002 | 5,565,443 | | 2001 | 5,330,909 | | 2000 | 5,105,313 | | 1999 | 4,892,125 | | 1998 | 4,773,335 | | 1997 | 4,688,229 | | 1996 | 4,565,474 | | 1995 | 4,460,449 | | 1994 | 4,332,914 | | 1993 | 4,234,032 | | 1992 | 4,217,786 | | 1991 | 4,182,177 | | 1990 | 4,120,099 | | 1989 | 4,117,498 | | 1988 | 4,246,868 | | 1987 | 4,350,058 | | 1986 | 4,315,482 | | 1985 | 4,243,620 | | 1984 | 4,176,752 | | 1983 | 4,110,460 | | 1982 | 4,024,574 | | 1981 | 3,928,544 | | 1980 | 3,834,894 | | 1979 | 3,743,636 | | 1978 | 3,654,580 | | 1977 | 3,567,388 | | 1976 | 3,482,407 | | 1975 | 3,399,399 | | 1974 | 3,317,934 | | 1973 | 3,237,848 | | 1972 | 3,166,403 | | 1971 | 3,103,935 | | 1970 | 3,053,860 | | 1969 | 3,016,443 | | 1968 | 2,979,390 | | 1967 | 2,942,710 | | 1966 | 2,908,852 | | 1965 | 2,870,441 | | 1964 | 2,819,922 | | 1963 | 2,771,660 | | 1962 | 2,731,194 | | 1961 | 2,691,303 | | 1960 | 2,653,356 |
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