Year | Value | 2022 | 4,739 | 2021 | 4,550 | 2020 | 4,372 | 2019 | 4,217 | 2018 | 4,077 | 2017 | 3,957 | 2016 | 3,879 | 2015 | 3,813 | 2014 | 3,748 | 2013 | 3,674 | 2012 | 3,581 | 2011 | 3,465 | 2010 | 3,323 | 2009 | 3,169 | 2008 | 3,032 | 2007 | 2,931 | 2006 | 2,893 | 2005 | 2,936 | 2004 | 3,039 | 2003 | 3,163 | 2002 | 3,289 | 2001 | 3,368 | 2000 | 3,328 | 1999 | 3,175 | 1998 | 2,948 | 1997 | 2,703 | 1996 | 2,496 | 1995 | 2,371 | 1994 | 2,341 | 1993 | 2,387 | 1992 | 2,488 | 1991 | 2,593 | 1990 | 2,697 | 1989 | 2,787 | 1988 | 2,828 | 1987 | 2,829 | 1986 | 2,805 | 1985 | 2,776 | 1984 | 2,757 | 1983 | 2,755 | 1982 | 2,759 | 1981 | 2,758 | 1980 | 2,751 | 1979 | 2,726 | 1978 | 2,670 | 1977 | 2,592 | 1976 | 2,504 | 1975 | 2,421 | 1974 | 2,353 | 1973 | 2,301 | 1972 | 2,266 | 1971 | 2,243 | 1970 | 2,226 | 1969 | 2,206 | 1968 | 2,175 | 1967 | 2,139 | 1966 | 2,103 | 1965 | 2,068 | 1964 | 2,043 | 1963 | 2,032 | 1962 | 2,029 | 1961 | 2,032 | 1960 | 2,005 |
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