| Year | Value | | 2022 | 96,920 | | 2021 | 96,285 | | 2020 | 96,275 | | 2019 | 96,351 | | 2018 | 96,315 | | 2017 | 95,052 | | 2016 | 92,261 | | 2015 | 89,004 | | 2014 | 85,803 | | 2013 | 82,915 | | 2012 | 80,331 | | 2011 | 77,942 | | 2010 | 75,706 | | 2009 | 73,571 | | 2008 | 71,493 | | 2007 | 69,552 | | 2006 | 67,844 | | 2005 | 66,363 | | 2004 | 65,089 | | 2003 | 63,980 | | 2002 | 62,998 | | 2001 | 62,090 | | 2000 | 61,205 | | 1999 | 60,377 | | 1998 | 59,619 | | 1997 | 58,910 | | 1996 | 58,193 | | 1995 | 57,425 | | 1994 | 56,629 | | 1993 | 55,811 | | 1992 | 54,949 | | 1991 | 54,022 | | 1990 | 53,042 | | 1989 | 52,037 | | 1988 | 51,013 | | 1987 | 49,911 | | 1986 | 48,689 | | 1985 | 47,314 | | 1984 | 45,813 | | 1983 | 44,231 | | 1982 | 42,610 | | 1981 | 41,020 | | 1980 | 39,482 | | 1979 | 37,983 | | 1978 | 36,552 | | 1977 | 35,196 | | 1976 | 33,853 | | 1975 | 32,494 | | 1974 | 31,138 | | 1973 | 29,789 | | 1972 | 28,456 | | 1971 | 27,178 | | 1970 | 25,992 | | 1969 | 24,893 | | 1968 | 23,888 | | 1967 | 22,958 | | 1966 | 22,053 | | 1965 | 21,136 | | 1964 | 20,219 | | 1963 | 19,311 | | 1962 | 18,411 | | 1961 | 17,566 | | 1960 | 16,809 |
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