| Year | Value | | 2022 | 3,991,006 | | 2021 | 3,932,453 | | 2020 | 3,887,820 | | 2019 | 3,853,212 | | 2018 | 3,823,718 | | 2017 | 3,793,566 | | 2016 | 3,767,728 | | 2015 | 3,740,179 | | 2014 | 3,695,207 | | 2013 | 3,632,613 | | 2012 | 3,556,867 | | 2011 | 3,463,958 | | 2010 | 3,354,703 | | 2009 | 3,236,511 | | 2008 | 3,114,488 | | 2007 | 2,990,042 | | 2006 | 2,863,057 | | 2005 | 2,734,875 | | 2004 | 2,614,141 | | 2003 | 2,513,457 | | 2002 | 2,443,940 | | 2001 | 2,396,721 | | 2000 | 2,359,190 | | 1999 | 2,334,361 | | 1998 | 2,314,555 | | 1997 | 2,282,229 | | 1996 | 2,234,773 | | 1995 | 2,180,372 | | 1994 | 2,123,568 | | 1993 | 2,061,478 | | 1992 | 2,003,959 | | 1991 | 1,949,953 | | 1990 | 1,891,324 | | 1989 | 1,836,309 | | 1988 | 1,784,822 | | 1987 | 1,735,541 | | 1986 | 1,687,725 | | 1985 | 1,641,214 | | 1984 | 1,600,061 | | 1983 | 1,561,799 | | 1982 | 1,518,924 | | 1981 | 1,471,977 | | 1980 | 1,423,912 | | 1979 | 1,381,518 | | 1978 | 1,346,768 | | 1977 | 1,315,190 | | 1976 | 1,284,358 | | 1975 | 1,254,106 | | 1974 | 1,224,759 | | 1973 | 1,196,134 | | 1972 | 1,167,850 | | 1971 | 1,142,354 | | 1970 | 1,116,841 | | 1969 | 1,089,082 | | 1968 | 1,062,220 | | 1967 | 1,035,995 | | 1966 | 1,009,741 | | 1965 | 983,237 | | 1964 | 956,500 | | 1963 | 929,220 | | 1962 | 902,017 | | 1961 | 876,530 | | 1960 | 852,765 |
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