Year | Value | 2022 | 44,274 | 2021 | 43,392 | 2020 | 43,313 | 2019 | 44,374 | 2018 | 45,838 | 2017 | 47,392 | 2016 | 49,042 | 2015 | 49,960 | 2014 | 49,876 | 2013 | 48,783 | 2012 | 46,931 | 2011 | 44,999 | 2010 | 43,612 | 2009 | 42,733 | 2008 | 41,956 | 2007 | 41,161 | 2006 | 40,292 | 2005 | 39,070 | 2004 | 37,447 | 2003 | 35,833 | 2002 | 34,374 | 2001 | 32,855 | 2000 | 31,260 | 1999 | 29,687 | 1998 | 28,158 | 1997 | 26,657 | 1996 | 25,222 | 1995 | 23,894 | 1994 | 22,692 | 1993 | 21,624 | 1992 | 20,709 | 1991 | 19,945 | 1990 | 19,308 | 1989 | 18,817 | 1988 | 18,471 | 1987 | 18,227 | 1986 | 18,055 | 1985 | 17,919 | 1984 | 17,809 | 1983 | 17,719 | 1982 | 17,667 | 1981 | 17,668 | 1980 | 17,717 | 1979 | 17,797 | 1978 | 17,857 | 1977 | 17,913 | 1976 | 17,987 | 1975 | 18,062 | 1974 | 18,147 | 1973 | 18,263 | 1972 | 18,356 | 1971 | 18,369 | 1970 | 18,302 | 1969 | 18,167 | 1968 | 17,995 | 1967 | 17,823 | 1966 | 17,644 | 1965 | 17,446 | 1964 | 17,216 | 1963 | 16,940 | 1962 | 16,628 | 1961 | 16,320 | 1960 | 16,006 |
|