| Year | Value | | 2022 | 573,515 | | 2021 | 565,418 | | 2020 | 555,495 | | 2019 | 543,255 | | 2018 | 529,987 | | 2017 | 517,012 | | 2016 | 504,579 | | 2015 | 492,443 | | 2014 | 479,958 | | 2013 | 467,110 | | 2012 | 453,996 | | 2011 | 440,624 | | 2010 | 427,501 | | 2009 | 414,085 | | 2008 | 400,290 | | 2007 | 385,969 | | 2006 | 369,931 | | 2005 | 352,518 | | 2004 | 336,157 | | 2003 | 321,125 | | 2002 | 306,983 | | 2001 | 295,133 | | 2000 | 285,520 | | 1999 | 276,924 | | 1998 | 269,080 | | 1997 | 262,561 | | 1996 | 257,224 | | 1995 | 252,898 | | 1994 | 249,204 | | 1993 | 245,855 | | 1992 | 242,873 | | 1991 | 240,587 | | 1990 | 239,328 | | 1989 | 239,101 | | 1988 | 239,877 | | 1987 | 240,663 | | 1986 | 239,870 | | 1985 | 236,490 | | 1984 | 230,416 | | 1983 | 221,379 | | 1982 | 209,811 | | 1981 | 197,919 | | 1980 | 187,499 | | 1979 | 178,473 | | 1978 | 170,624 | | 1977 | 164,176 | | 1976 | 158,647 | | 1975 | 153,628 | | 1974 | 149,304 | | 1973 | 146,014 | | 1972 | 143,501 | | 1971 | 141,134 | | 1970 | 138,432 | | 1969 | 135,586 | | 1968 | 132,679 | | 1967 | 129,598 | | 1966 | 126,462 | | 1965 | 123,390 | | 1964 | 120,273 | | 1963 | 117,195 | | 1962 | 114,048 | | 1961 | 110,806 | | 1960 | 107,874 |
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