| Year | Value | | 2022 | 11,779,249 | | 2021 | 11,660,109 | | 2020 | 11,559,052 | | 2019 | 11,361,102 | | 2018 | 11,234,670 | | 2017 | 11,123,129 | | 2016 | 11,014,728 | | 2015 | 10,913,917 | | 2014 | 10,823,339 | | 2013 | 10,704,670 | | 2012 | 10,542,169 | | 2011 | 10,333,375 | | 2010 | 10,118,187 | | 2009 | 9,935,175 | | 2008 | 9,812,125 | | 2007 | 9,771,214 | | 2006 | 9,861,766 | | 2005 | 10,064,119 | | 2004 | 10,275,882 | | 2003 | 10,431,846 | | 2002 | 10,525,908 | | 2001 | 10,520,922 | | 2000 | 10,477,974 | | 1999 | 10,500,965 | | 1998 | 10,621,553 | | 1997 | 10,795,412 | | 1996 | 10,994,790 | | 1995 | 11,182,665 | | 1994 | 11,276,354 | | 1993 | 11,281,045 | | 1992 | 11,227,156 | | 1991 | 11,114,276 | | 1990 | 10,958,122 | | 1989 | 10,823,928 | | 1988 | 10,690,671 | | 1987 | 10,476,930 | | 1986 | 10,402,958 | | 1985 | 10,174,884 | | 1984 | 9,641,880 | | 1983 | 9,250,202 | | 1982 | 9,045,610 | | 1981 | 8,701,348 | | 1980 | 8,335,211 | | 1979 | 8,145,258 | | 1978 | 7,925,124 | | 1977 | 7,620,057 | | 1976 | 7,150,733 | | 1975 | 6,831,051 | | 1974 | 6,697,081 | | 1973 | 6,448,900 | | 1972 | 6,133,391 | | 1971 | 5,992,526 | | 1970 | 5,889,250 | | 1969 | 5,706,781 | | 1968 | 5,676,575 | | 1967 | 5,748,801 | | 1966 | 5,811,862 | | 1965 | 5,968,314 | | 1964 | 6,286,435 | | 1963 | 6,463,115 | | 1962 | 6,494,632 | | 1961 | 6,527,553 | | 1960 | 6,415,159 |
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