| Year | Value | | 2022 | 3,258,826 | | 2021 | 3,300,030 | | 2020 | 3,353,821 | | 2019 | 3,428,920 | | 2018 | 3,498,610 | | 2017 | 3,554,102 | | 2016 | 3,610,592 | | 2015 | 3,677,946 | | 2014 | 3,759,628 | | 2013 | 3,862,241 | | 2012 | 3,990,432 | | 2011 | 4,145,565 | | 2010 | 4,319,984 | | 2009 | 4,504,985 | | 2008 | 4,704,913 | | 2007 | 4,872,523 | | 2006 | 4,975,594 | | 2005 | 5,011,070 | | 2004 | 4,973,748 | | 2003 | 4,879,875 | | 2002 | 4,788,891 | | 2001 | 4,619,567 | | 2000 | 4,447,878 | | 1999 | 4,384,284 | | 1998 | 4,307,600 | | 1997 | 4,188,820 | | 1996 | 4,162,966 | | 1995 | 4,160,639 | | 1994 | 4,077,633 | | 1993 | 4,024,772 | | 1992 | 3,982,721 | | 1991 | 3,960,393 | | 1990 | 3,981,780 | | 1989 | 4,022,301 | | 1988 | 4,072,465 | | 1987 | 4,182,389 | | 1986 | 4,346,371 | | 1985 | 4,545,569 | | 1984 | 4,852,799 | | 1983 | 5,238,833 | | 1982 | 5,574,462 | | 1981 | 5,683,480 | | 1980 | 5,530,507 | | 1979 | 5,283,054 | | 1978 | 5,017,636 | | 1977 | 4,763,567 | | 1976 | 4,690,781 | | 1975 | 4,776,339 | | 1974 | 4,726,532 | | 1973 | 4,561,847 | | 1972 | 4,424,444 | | 1971 | 4,319,830 | | 1970 | 4,217,210 | | 1969 | 4,223,009 | | 1968 | 4,256,482 | | 1967 | 4,259,102 | | 1966 | 4,217,720 | | 1965 | 4,164,982 | | 1964 | 4,115,117 | | 1963 | 4,058,653 | | 1962 | 3,987,963 | | 1961 | 3,912,604 | | 1960 | 3,825,563 |
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