| Year | Value | | 2022 | 2,831,639 | | 2021 | 2,800,839 | | 2020 | 2,794,885 | | 2019 | 2,794,137 | | 2018 | 2,801,543 | | 2017 | 2,828,403 | | 2016 | 2,868,231 | | 2015 | 2,904,910 | | 2014 | 2,932,367 | | 2013 | 2,957,689 | | 2012 | 2,987,773 | | 2011 | 3,028,115 | | 2010 | 3,097,282 | | 2009 | 3,162,916 | | 2008 | 3,198,231 | | 2007 | 3,231,294 | | 2006 | 3,269,909 | | 2005 | 3,322,528 | | 2004 | 3,377,075 | | 2003 | 3,415,213 | | 2002 | 3,443,067 | | 2001 | 3,470,818 | | 2000 | 3,499,536 | | 1999 | 3,524,238 | | 1998 | 3,549,331 | | 1997 | 3,575,137 | | 1996 | 3,601,613 | | 1995 | 3,629,102 | | 1994 | 3,657,144 | | 1993 | 3,682,613 | | 1992 | 3,700,114 | | 1991 | 3,704,134 | | 1990 | 3,697,838 | | 1989 | 3,684,255 | | 1988 | 3,655,049 | | 1987 | 3,616,367 | | 1986 | 3,578,914 | | 1985 | 3,544,543 | | 1984 | 3,514,205 | | 1983 | 3,485,192 | | 1982 | 3,457,179 | | 1981 | 3,432,947 | | 1980 | 3,413,202 | | 1979 | 3,397,842 | | 1978 | 3,379,514 | | 1977 | 3,355,036 | | 1976 | 3,328,664 | | 1975 | 3,301,652 | | 1974 | 3,273,894 | | 1973 | 3,244,438 | | 1972 | 3,213,622 | | 1971 | 3,179,041 | | 1970 | 3,139,689 | | 1969 | 3,107,321 | | 1968 | 3,078,850 | | 1967 | 3,044,400 | | 1966 | 3,008,050 | | 1965 | 2,971,450 | | 1964 | 2,935,200 | | 1963 | 2,898,950 | | 1962 | 2,863,350 | | 1961 | 2,823,550 | | 1960 | 2,778,550 |
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