| Year | Value | | 2022 | 270,871 | | 2021 | 251,806 | | 2020 | 244,794 | | 2019 | 233,091 | | 2018 | 219,037 | | 2017 | 206,908 | | 2016 | 197,473 | | 2015 | 189,433 | | 2014 | 184,421 | | 2013 | 182,964 | | 2012 | 184,707 | | 2011 | 188,746 | | 2010 | 193,737 | | 2009 | 198,290 | | 2008 | 200,811 | | 2007 | 201,277 | | 2006 | 200,797 | | 2005 | 200,328 | | 2004 | 200,914 | | 2003 | 203,357 | | 2002 | 205,991 | | 2001 | 207,937 | | 2000 | 207,212 | | 1999 | 200,528 | | 1998 | 183,720 | | 1997 | 160,148 | | 1996 | 137,114 | | 1995 | 119,888 | | 1994 | 115,394 | | 1993 | 126,943 | | 1992 | 147,283 | | 1991 | 167,509 | | 1990 | 184,582 | | 1989 | 192,713 | | 1988 | 192,976 | | 1987 | 191,675 | | 1986 | 190,560 | | 1985 | 187,878 | | 1984 | 183,669 | | 1983 | 180,542 | | 1982 | 178,360 | | 1981 | 176,131 | | 1980 | 175,399 | | 1979 | 174,448 | | 1978 | 171,045 | | 1977 | 166,770 | | 1976 | 162,385 | | 1975 | 157,671 | | 1974 | 152,927 | | 1973 | 147,873 | | 1972 | 141,897 | | 1971 | 137,072 | | 1970 | 133,258 | | 1969 | 128,837 | | 1968 | 124,648 | | 1967 | 121,269 | | 1966 | 117,802 | | 1965 | 114,640 | | 1964 | 112,103 | | 1963 | 109,171 | | 1962 | 106,340 | | 1961 | 103,684 | | 1960 | 101,042 |
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