| Year | Value | | 2022 | 116,896 | | 2021 | 105,258 | | 2020 | 99,358 | | 2019 | 97,970 | | 2018 | 98,411 | | 2017 | 101,075 | | 2016 | 104,587 | | 2015 | 107,357 | | 2014 | 108,662 | | 2013 | 109,324 | | 2012 | 109,536 | | 2011 | 108,122 | | 2010 | 106,662 | | 2009 | 104,484 | | 2008 | 101,788 | | 2007 | 98,603 | | 2006 | 95,744 | | 2005 | 92,883 | | 2004 | 90,019 | | 2003 | 86,865 | | 2002 | 84,185 | | 2001 | 80,942 | | 2000 | 77,912 | | 1999 | 74,257 | | 1998 | 68,954 | | 1997 | 62,402 | | 1996 | 55,604 | | 1995 | 50,335 | | 1994 | 50,240 | | 1993 | 51,059 | | 1992 | 52,369 | | 1991 | 53,478 | | 1990 | 53,488 | | 1989 | 52,643 | | 1988 | 50,189 | | 1987 | 47,089 | | 1986 | 43,827 | | 1985 | 41,227 | | 1984 | 40,063 | | 1983 | 39,522 | | 1982 | 38,482 | | 1981 | 37,076 | | 1980 | 35,601 | | 1979 | 34,094 | | 1978 | 31,625 | | 1977 | 30,422 | | 1976 | 29,202 | | 1975 | 27,815 | | 1974 | 26,194 | | 1973 | 24,400 | | 1972 | 22,777 | | 1971 | 21,463 | | 1970 | 20,086 | | 1969 | 18,712 | | 1968 | 17,656 | | 1967 | 16,508 | | 1966 | 15,305 | | 1965 | 14,285 | | 1964 | 13,080 | | 1963 | 12,038 | | 1962 | 10,986 | | 1961 | 10,048 | | 1960 | 9,349 |
|