Year | Value | 2022 | 58,600 | 2021 | 59,084 | 2020 | 60,014 | 2019 | 60,688 | 2018 | 60,807 | 2017 | 60,795 | 2016 | 60,589 | 2015 | 60,136 | 2014 | 59,383 | 2013 | 58,283 | 2012 | 56,793 | 2011 | 54,848 | 2010 | 52,319 | 2009 | 49,216 | 2008 | 45,717 | 2007 | 42,082 | 2006 | 38,583 | 2005 | 35,403 | 2004 | 32,674 | 2003 | 30,490 | 2002 | 28,764 | 2001 | 27,347 | 2000 | 26,189 | 1999 | 25,231 | 1998 | 24,405 | 1997 | 23,676 | 1996 | 23,048 | 1995 | 22,517 | 1994 | 22,084 | 1993 | 21,679 | 1992 | 21,277 | 1991 | 20,913 | 1990 | 20,562 | 1989 | 20,183 | 1988 | 19,741 | 1987 | 19,200 | 1986 | 18,485 | 1985 | 17,501 | 1984 | 16,234 | 1983 | 14,740 | 1982 | 13,539 | 1981 | 12,801 | 1980 | 12,258 | 1979 | 11,952 | 1978 | 11,882 | 1977 | 11,986 | 1976 | 12,258 | 1975 | 12,643 | 1974 | 13,063 | 1973 | 13,338 | 1972 | 13,406 | 1971 | 13,397 | 1970 | 13,269 | 1969 | 12,982 | 1968 | 12,650 | 1967 | 12,345 | 1966 | 12,021 | 1965 | 11,699 | 1964 | 11,402 | 1963 | 11,138 | 1962 | 10,912 | 1961 | 10,726 | 1960 | 10,579 |
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