Year | Value | 2022 | 16,678 | 2021 | 16,723 | 2020 | 16,787 | 2019 | 16,848 | 2018 | 16,905 | 2017 | 16,946 | 2016 | 16,893 | 2015 | 16,741 | 2014 | 16,460 | 2013 | 16,004 | 2012 | 15,425 | 2011 | 14,881 | 2010 | 14,440 | 2009 | 14,156 | 2008 | 14,036 | 2007 | 14,026 | 2006 | 14,079 | 2005 | 14,079 | 2004 | 14,032 | 2003 | 13,926 | 2002 | 13,782 | 2001 | 13,618 | 2000 | 13,450 | 1999 | 13,433 | 1998 | 13,615 | 1997 | 13,796 | 1996 | 13,917 | 1995 | 14,067 | 1994 | 14,119 | 1993 | 13,992 | 1992 | 13,860 | 1991 | 13,817 | 1990 | 13,797 | 1989 | 13,873 | 1988 | 14,073 | 1987 | 14,220 | 1986 | 14,182 | 1985 | 13,949 | 1984 | 13,527 | 1983 | 12,928 | 1982 | 12,249 | 1981 | 11,593 | 1980 | 11,005 | 1979 | 10,467 | 1978 | 9,933 | 1977 | 9,371 | 1976 | 8,771 | 1975 | 8,190 | 1974 | 7,711 | 1973 | 7,372 | 1972 | 7,163 | 1971 | 7,037 | 1970 | 6,924 | 1969 | 6,839 | 1968 | 6,783 | 1967 | 6,709 | 1966 | 6,620 | 1965 | 6,508 | 1964 | 6,362 | 1963 | 6,105 | 1962 | 5,719 | 1961 | 5,287 | 1960 | 4,845 |
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