Year | Value | 2022 | 39,893 | 2021 | 40,606 | 2020 | 41,270 | 2019 | 41,498 | 2018 | 41,523 | 2017 | 41,472 | 2016 | 41,273 | 2015 | 40,923 | 2014 | 40,763 | 2013 | 40,191 | 2012 | 38,937 | 2011 | 37,578 | 2010 | 35,989 | 2009 | 34,249 | 2008 | 32,943 | 2007 | 32,021 | 2006 | 31,067 | 2005 | 30,078 | 2004 | 29,104 | 2003 | 28,271 | 2002 | 27,496 | 2001 | 26,829 | 2000 | 26,224 | 1999 | 25,575 | 1998 | 24,942 | 1997 | 24,337 | 1996 | 23,769 | 1995 | 23,258 | 1994 | 22,738 | 1993 | 22,161 | 1992 | 21,568 | 1991 | 20,961 | 1990 | 20,351 | 1989 | 19,749 | 1988 | 19,462 | 1987 | 19,653 | 1986 | 20,018 | 1985 | 20,379 | 1984 | 20,725 | 1983 | 21,057 | 1982 | 21,396 | 1981 | 21,765 | 1980 | 22,175 | 1979 | 22,627 | 1978 | 23,114 | 1977 | 23,610 | 1976 | 24,064 | 1975 | 24,150 | 1974 | 23,907 | 1973 | 23,660 | 1972 | 23,405 | 1971 | 23,143 | 1970 | 22,870 | 1969 | 22,579 | 1968 | 22,268 | 1967 | 21,960 | 1966 | 21,689 | 1965 | 21,473 | 1964 | 21,317 | 1963 | 21,230 | 1962 | 21,176 | 1961 | 21,072 | 1960 | 20,854 |
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