| Year | Value | | 2022 | 113,585 | | 2021 | 115,118 | | 2020 | 117,239 | | 2019 | 118,653 | | 2018 | 119,583 | | 2017 | 120,778 | | 2016 | 122,361 | | 2015 | 123,971 | | 2014 | 125,501 | | 2013 | 127,083 | | 2012 | 129,716 | | 2011 | 132,394 | | 2010 | 133,291 | | 2009 | 133,180 | | 2008 | 132,884 | | 2007 | 132,709 | | 2006 | 133,057 | | 2005 | 134,567 | | 2004 | 138,190 | | 2003 | 142,468 | | 2002 | 145,888 | | 2001 | 149,120 | | 2000 | 152,048 | | 1999 | 153,963 | | 1998 | 154,785 | | 1997 | 153,616 | | 1996 | 148,331 | | 1995 | 142,095 | | 1994 | 143,822 | | 1993 | 151,811 | | 1992 | 164,462 | | 1991 | 171,940 | | 1990 | 168,571 | | 1989 | 163,492 | | 1988 | 157,580 | | 1987 | 151,447 | | 1986 | 144,774 | | 1985 | 137,343 | | 1984 | 129,361 | | 1983 | 121,584 | | 1982 | 115,357 | | 1981 | 112,420 | | 1980 | 113,643 | | 1979 | 118,663 | | 1978 | 126,217 | | 1977 | 134,685 | | 1976 | 142,207 | | 1975 | 147,241 | | 1974 | 149,563 | | 1973 | 149,538 | | 1972 | 147,656 | | 1971 | 145,011 | | 1970 | 142,393 | | 1969 | 139,851 | | 1968 | 137,166 | | 1967 | 134,288 | | 1966 | 131,017 | | 1965 | 127,171 | | 1964 | 122,800 | | 1963 | 118,042 | | 1962 | 112,708 | | 1961 | 106,506 | | 1960 | 99,403 |
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