Year | Value | 2022 | 13,323 | 2021 | 13,987 | 2020 | 14,596 | 2019 | 14,835 | 2018 | 14,870 | 2017 | 14,957 | 2016 | 15,030 | 2015 | 15,086 | 2014 | 15,106 | 2013 | 15,043 | 2012 | 14,843 | 2011 | 14,599 | 2010 | 14,370 | 2009 | 14,109 | 2008 | 13,880 | 2007 | 13,852 | 2006 | 14,030 | 2005 | 14,238 | 2004 | 14,367 | 2003 | 14,390 | 2002 | 14,277 | 2001 | 14,093 | 2000 | 14,016 | 1999 | 13,967 | 1998 | 13,829 | 1997 | 13,666 | 1996 | 13,487 | 1995 | 13,189 | 1994 | 12,788 | 1993 | 12,392 | 1992 | 12,061 | 1991 | 11,814 | 1990 | 11,455 | 1989 | 11,511 | 1988 | 11,760 | 1987 | 12,104 | 1986 | 12,498 | 1985 | 12,892 | 1984 | 13,301 | 1983 | 13,850 | 1982 | 14,165 | 1981 | 14,275 | 1980 | 14,400 | 1979 | 14,323 | 1978 | 14,237 | 1977 | 14,101 | 1976 | 14,072 | 1975 | 14,168 | 1974 | 14,406 | 1973 | 14,859 | 1972 | 15,360 | 1971 | 15,879 | 1970 | 16,246 | 1969 | 16,402 | 1968 | 16,367 | 1967 | 16,020 | 1966 | 15,297 | 1965 | 14,337 | 1964 | 13,309 | 1963 | 12,400 | 1962 | 11,864 | 1961 | 11,798 | 1960 | 12,127 |
|