| Year | Value | | 2022 | 2,737,900 | | 2021 | 2,633,203 | | 2020 | 2,691,170 | | 2019 | 2,751,504 | | 2018 | 2,836,680 | | 2017 | 2,942,810 | | 2016 | 3,066,146 | | 2015 | 3,203,727 | | 2014 | 3,340,240 | | 2013 | 3,467,379 | | 2012 | 3,586,412 | | 2011 | 3,695,636 | | 2010 | 3,797,157 | | 2009 | 3,890,521 | | 2008 | 3,961,410 | | 2007 | 4,027,007 | | 2006 | 4,081,984 | | 2005 | 4,129,202 | | 2004 | 4,187,330 | | 2003 | 4,249,723 | | 2002 | 4,312,525 | | 2001 | 4,391,058 | | 2000 | 4,450,274 | | 1999 | 4,476,327 | | 1998 | 4,454,490 | | 1997 | 4,394,292 | | 1996 | 4,304,731 | | 1995 | 4,208,251 | | 1994 | 4,118,792 | | 1993 | 4,066,755 | | 1992 | 4,066,300 | | 1991 | 4,049,316 | | 1990 | 3,984,453 | | 1989 | 3,913,597 | | 1988 | 3,851,393 | | 1987 | 3,785,053 | | 1986 | 3,779,339 | | 1985 | 3,846,572 | | 1984 | 3,918,370 | | 1983 | 3,994,074 | | 1982 | 4,093,782 | | 1981 | 4,223,025 | | 1980 | 4,360,885 | | 1979 | 4,480,318 | | 1978 | 4,563,154 | | 1977 | 4,606,454 | | 1976 | 4,614,844 | | 1975 | 4,597,014 | | 1974 | 4,562,089 | | 1973 | 4,512,925 | | 1972 | 4,441,586 | | 1971 | 4,326,265 | | 1970 | 4,137,587 | | 1969 | 3,913,140 | | 1968 | 3,696,477 | | 1967 | 3,485,464 | | 1966 | 3,328,857 | | 1965 | 3,289,641 | | 1964 | 3,322,230 | | 1963 | 3,356,637 | | 1962 | 3,397,967 | | 1961 | 3,435,699 | | 1960 | 3,457,707 |
|