Year | Value | 2022 | 45,695 | 2021 | 44,884 | 2020 | 44,299 | 2019 | 43,837 | 2018 | 43,413 | 2017 | 42,965 | 2016 | 42,426 | 2015 | 41,772 | 2014 | 41,029 | 2013 | 40,258 | 2012 | 39,521 | 2011 | 38,851 | 2010 | 38,133 | 2009 | 37,358 | 2008 | 36,596 | 2007 | 35,773 | 2006 | 34,847 | 2005 | 33,829 | 2004 | 32,781 | 2003 | 31,761 | 2002 | 30,819 | 2001 | 29,924 | 2000 | 29,078 | 1999 | 28,342 | 1998 | 27,697 | 1997 | 27,085 | 1996 | 26,456 | 1995 | 25,773 | 1994 | 25,012 | 1993 | 24,180 | 1992 | 23,363 | 1991 | 22,612 | 1990 | 21,893 | 1989 | 21,208 | 1988 | 20,569 | 1987 | 19,988 | 1986 | 19,464 | 1985 | 18,975 | 1984 | 18,520 | 1983 | 18,110 | 1982 | 17,778 | 1981 | 17,591 | 1980 | 17,556 | 1979 | 17,612 | 1978 | 17,691 | 1977 | 17,740 | 1976 | 17,718 | 1975 | 17,568 | 1974 | 17,326 | 1973 | 16,973 | 1972 | 16,453 | 1971 | 15,863 | 1970 | 15,353 | 1969 | 15,077 | 1968 | 15,097 | 1967 | 15,354 | 1966 | 15,681 | 1965 | 15,842 | 1964 | 15,685 | 1963 | 15,225 | 1962 | 14,604 | 1961 | 14,068 | 1960 | 14,032 |
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