Year | Value | 2022 | 49,179 | 2021 | 47,807 | 2020 | 45,959 | 2019 | 43,674 | 2018 | 41,321 | 2017 | 39,545 | 2016 | 38,633 | 2015 | 38,283 | 2014 | 38,020 | 2013 | 37,588 | 2012 | 37,148 | 2011 | 36,992 | 2010 | 37,052 | 2009 | 37,122 | 2008 | 37,081 | 2007 | 36,730 | 2006 | 35,835 | 2005 | 34,495 | 2004 | 33,048 | 2003 | 31,791 | 2002 | 30,892 | 2001 | 30,681 | 2000 | 30,415 | 1999 | 30,180 | 1998 | 29,716 | 1997 | 28,924 | 1996 | 27,984 | 1995 | 26,762 | 1994 | 25,455 | 1993 | 24,124 | 1992 | 22,852 | 1991 | 21,687 | 1990 | 20,707 | 1989 | 20,059 | 1988 | 19,872 | 1987 | 20,222 | 1986 | 21,004 | 1985 | 21,970 | 1984 | 22,837 | 1983 | 23,312 | 1982 | 23,150 | 1981 | 22,325 | 1980 | 21,049 | 1979 | 19,560 | 1978 | 18,107 | 1977 | 16,917 | 1976 | 16,070 | 1975 | 15,516 | 1974 | 15,137 | 1973 | 14,803 | 1972 | 14,401 | 1971 | 13,902 | 1970 | 13,350 | 1969 | 12,786 | 1968 | 12,257 | 1967 | 11,821 | 1966 | 11,512 | 1965 | 11,357 | 1964 | 11,382 | 1963 | 11,591 | 1962 | 11,968 | 1961 | 12,414 | 1960 | 12,757 |
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