Year | Value | 2022 | 35,298 | 2021 | 34,253 | 2020 | 33,156 | 2019 | 31,773 | 2018 | 30,011 | 2017 | 28,042 | 2016 | 26,163 | 2015 | 24,383 | 2014 | 22,927 | 2013 | 21,992 | 2012 | 21,294 | 2011 | 20,560 | 2010 | 19,759 | 2009 | 18,940 | 2008 | 18,200 | 2007 | 17,560 | 2006 | 17,032 | 2005 | 16,577 | 2004 | 16,169 | 2003 | 15,833 | 2002 | 15,528 | 2001 | 15,342 | 2000 | 15,196 | 1999 | 14,959 | 1998 | 14,716 | 1997 | 14,472 | 1996 | 14,226 | 1995 | 14,029 | 1994 | 13,845 | 1993 | 13,636 | 1992 | 13,448 | 1991 | 13,280 | 1990 | 13,108 | 1989 | 12,890 | 1988 | 12,921 | 1987 | 13,405 | 1986 | 14,100 | 1985 | 14,874 | 1984 | 15,719 | 1983 | 16,636 | 1982 | 17,578 | 1981 | 18,449 | 1980 | 19,190 | 1979 | 19,804 | 1978 | 20,302 | 1977 | 20,694 | 1976 | 21,012 | 1975 | 20,981 | 1974 | 20,621 | 1973 | 20,248 | 1972 | 19,881 | 1971 | 19,547 | 1970 | 19,262 | 1969 | 19,023 | 1968 | 18,852 | 1967 | 18,721 | 1966 | 18,552 | 1965 | 18,296 | 1964 | 17,951 | 1963 | 17,510 | 1962 | 17,010 | 1961 | 16,562 | 1960 | 16,245 |
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