| Year | Value | | 2022 | 82,063 | | 2021 | 77,527 | | 2020 | 79,618 | | 2019 | 77,987 | | 2018 | 74,508 | | 2017 | 70,999 | | 2016 | 67,582 | | 2015 | 63,680 | | 2014 | 60,344 | | 2013 | 57,281 | | 2012 | 54,287 | | 2011 | 51,110 | | 2010 | 48,416 | | 2009 | 46,145 | | 2008 | 43,477 | | 2007 | 39,986 | | 2006 | 37,176 | | 2005 | 34,851 | | 2004 | 32,870 | | 2003 | 31,467 | | 2002 | 31,124 | | 2001 | 30,144 | | 2000 | 28,777 | | 1999 | 27,894 | | 1998 | 27,407 | | 1997 | 26,295 | | 1996 | 25,300 | | 1995 | 24,089 | | 1994 | 22,922 | | 1993 | 21,603 | | 1992 | 20,370 | | 1991 | 18,999 | | 1990 | 17,576 | | 1989 | 15,875 | | 1988 | 14,355 | | 1987 | 13,008 | | 1986 | 11,943 | | 1985 | 11,285 | | 1984 | 10,854 | | 1983 | 10,332 | | 1982 | 9,868 | | 1981 | 9,127 | | 1980 | 8,361 | | 1979 | 7,885 | | 1978 | 7,358 | | 1977 | 6,859 | | 1976 | 6,460 | | 1975 | 6,138 | | 1974 | 5,838 | | 1973 | 5,526 | | 1972 | 5,224 | | 1971 | 4,966 | | 1970 | 4,743 | | 1969 | 4,377 | | 1968 | 3,881 | | 1967 | 3,446 | | 1966 | 3,055 | | 1965 | 2,715 | | 1964 | 2,426 | | 1963 | 2,163 | | 1962 | 1,933 | | 1961 | 1,755 | | 1960 | 1,631 |
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