Year | Value | 2022 | 26,105 | 2021 | 26,012 | 2020 | 26,096 | 2019 | 26,419 | 2018 | 26,862 | 2017 | 27,346 | 2016 | 27,891 | 2015 | 28,495 | 2014 | 29,141 | 2013 | 29,797 | 2012 | 30,384 | 2011 | 30,758 | 2010 | 30,791 | 2009 | 30,541 | 2008 | 30,163 | 2007 | 29,759 | 2006 | 29,398 | 2005 | 29,088 | 2004 | 28,794 | 2003 | 28,516 | 2002 | 28,271 | 2001 | 28,073 | 2000 | 27,933 | 1999 | 27,525 | 1998 | 26,748 | 1997 | 25,818 | 1996 | 24,746 | 1995 | 23,592 | 1994 | 22,454 | 1993 | 21,408 | 1992 | 20,506 | 1991 | 19,787 | 1990 | 19,258 | 1989 | 19,020 | 1988 | 19,046 | 1987 | 19,168 | 1986 | 19,325 | 1985 | 19,515 | 1984 | 19,733 | 1983 | 19,899 | 1982 | 19,942 | 1981 | 19,865 | 1980 | 19,614 | 1979 | 19,055 | 1978 | 18,440 | 1977 | 18,049 | 1976 | 17,843 | 1975 | 17,775 | 1974 | 17,498 | 1973 | 16,976 | 1972 | 16,518 | 1971 | 16,058 | 1970 | 15,404 | 1969 | 14,445 | 1968 | 13,350 | 1967 | 12,309 | 1966 | 11,351 | 1965 | 10,518 | 1964 | 9,863 | 1963 | 9,369 | 1962 | 8,979 | 1961 | 8,752 | 1960 | 8,797 |
|