| Year | Value | | 2022 | 4,214,875 | | 2021 | 4,215,972 | | 2020 | 4,214,803 | | 2019 | 4,209,597 | | 2018 | 4,201,524 | | 2017 | 4,191,816 | | 2016 | 4,180,443 | | 2015 | 4,167,191 | | 2014 | 4,151,892 | | 2013 | 4,134,626 | | 2012 | 4,114,652 | | 2011 | 4,091,982 | | 2010 | 4,066,166 | | 2009 | 4,037,254 | | 2008 | 4,005,032 | | 2007 | 3,969,759 | | 2006 | 3,931,076 | | 2005 | 3,889,346 | | 2004 | 3,844,762 | | 2003 | 3,797,768 | | 2002 | 3,747,929 | | 2001 | 3,694,907 | | 2000 | 3,630,711 | | 1999 | 3,565,660 | | 1998 | 3,504,582 | | 1997 | 3,444,143 | | 1996 | 3,380,217 | | 1995 | 3,316,744 | | 1994 | 3,253,772 | | 1993 | 3,191,301 | | 1992 | 3,129,472 | | 1991 | 3,068,606 | | 1990 | 3,008,696 | | 1989 | 2,949,729 | | 1988 | 2,891,667 | | 1987 | 2,838,218 | | 1986 | 2,785,247 | | 1985 | 2,731,997 | | 1984 | 2,678,403 | | 1983 | 2,624,307 | | 1982 | 2,569,853 | | 1981 | 2,515,282 | | 1980 | 2,460,605 | | 1979 | 2,406,088 | | 1978 | 2,352,048 | | 1977 | 2,298,669 | | 1976 | 2,245,897 | | 1975 | 2,193,954 | | 1974 | 2,146,302 | | 1973 | 2,104,366 | | 1972 | 2,061,943 | | 1971 | 2,019,610 | | 1970 | 1,978,482 | | 1969 | 1,938,403 | | 1968 | 1,899,144 | | 1967 | 1,860,819 | | 1966 | 1,823,105 | | 1965 | 1,785,678 | | 1964 | 1,748,675 | | 1963 | 1,712,324 | | 1962 | 1,676,372 | | 1961 | 1,640,940 | | 1960 | 1,605,794 |
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