Year | Value | 2022 | 43,894 | 2021 | 44,661 | 2020 | 45,351 | 2019 | 44,909 | 2018 | 43,638 | 2017 | 42,516 | 2016 | 41,558 | 2015 | 40,756 | 2014 | 40,089 | 2013 | 39,556 | 2012 | 39,147 | 2011 | 38,794 | 2010 | 38,474 | 2009 | 38,210 | 2008 | 38,008 | 2007 | 37,823 | 2006 | 37,586 | 2005 | 37,272 | 2004 | 36,873 | 2003 | 36,358 | 2002 | 35,757 | 2001 | 35,201 | 2000 | 34,129 | 1999 | 32,453 | 1998 | 30,711 | 1997 | 28,910 | 1996 | 27,054 | 1995 | 25,125 | 1994 | 23,144 | 1993 | 21,171 | 1992 | 20,097 | 1991 | 19,879 | 1990 | 19,595 | 1989 | 19,243 | 1988 | 18,802 | 1987 | 18,287 | 1986 | 17,768 | 1985 | 17,290 | 1984 | 16,837 | 1983 | 16,402 | 1982 | 15,998 | 1981 | 15,614 | 1980 | 15,250 | 1979 | 14,918 | 1978 | 14,621 | 1977 | 14,365 | 1976 | 14,175 | 1975 | 14,071 | 1974 | 14,046 | 1973 | 14,109 | 1972 | 14,258 | 1971 | 14,437 | 1970 | 14,605 | 1969 | 14,767 | 1968 | 14,926 | 1967 | 15,067 | 1966 | 15,184 | 1965 | 15,273 | 1964 | 15,325 | 1963 | 15,326 | 1962 | 15,281 | 1961 | 15,212 | 1960 | 15,138 |
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