| Year | Value | | 2022 | 2,271,699 | | 2021 | 2,272,080 | | 2020 | 2,247,557 | | 2019 | 2,207,686 | | 2018 | 2,150,158 | | 2017 | 2,087,771 | | 2016 | 2,041,210 | | 2015 | 2,012,257 | | 2014 | 1,987,926 | | 2013 | 1,964,184 | | 2012 | 1,940,553 | | 2011 | 1,916,254 | | 2010 | 1,890,048 | | 2009 | 1,862,459 | | 2008 | 1,833,357 | | 2007 | 1,800,836 | | 2006 | 1,765,022 | | 2005 | 1,728,751 | | 2004 | 1,692,594 | | 2003 | 1,658,848 | | 2002 | 1,630,468 | | 2001 | 1,608,577 | | 2000 | 1,594,674 | | 1999 | 1,588,247 | | 1998 | 1,587,556 | | 1997 | 1,590,628 | | 1996 | 1,595,127 | | 1995 | 1,598,589 | | 1994 | 1,598,293 | | 1993 | 1,592,277 | | 1992 | 1,579,635 | | 1991 | 1,560,541 | | 1990 | 1,533,647 | | 1989 | 1,498,865 | | 1988 | 1,459,538 | | 1987 | 1,417,144 | | 1986 | 1,372,127 | | 1985 | 1,324,861 | | 1984 | 1,275,943 | | 1983 | 1,226,072 | | 1982 | 1,176,953 | | 1981 | 1,129,839 | | 1980 | 1,084,502 | | 1979 | 1,041,365 | | 1978 | 996,703 | | 1977 | 951,196 | | 1976 | 910,372 | | 1975 | 871,955 | | 1974 | 834,094 | | 1973 | 801,536 | | 1972 | 773,183 | | 1971 | 745,333 | | 1970 | 718,250 | | 1969 | 691,865 | | 1968 | 666,861 | | 1967 | 643,435 | | 1966 | 622,472 | | 1965 | 603,990 | | 1964 | 587,877 | | 1963 | 574,609 | | 1962 | 563,376 | | 1961 | 552,624 | | 1960 | 541,643 |
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