| Year | Value | | 2022 | 6,034,979 | | 2021 | 5,842,466 | | 2020 | 5,710,168 | | 2019 | 5,574,622 | | 2018 | 5,498,914 | | 2017 | 5,439,827 | | 2016 | 5,363,909 | | 2015 | 5,282,571 | | 2014 | 5,235,889 | | 2013 | 5,141,884 | | 2012 | 5,026,987 | | 2011 | 4,891,283 | | 2010 | 4,704,785 | | 2009 | 4,462,638 | | 2008 | 4,228,733 | | 2007 | 4,041,752 | | 2006 | 3,858,411 | | 2005 | 3,726,625 | | 2004 | 3,638,159 | | 2003 | 3,487,389 | | 2002 | 3,341,459 | | 2001 | 3,242,241 | | 2000 | 3,127,721 | | 1999 | 3,010,967 | | 1998 | 2,924,600 | | 1997 | 2,871,094 | | 1996 | 2,807,403 | | 1995 | 2,738,953 | | 1994 | 2,668,477 | | 1993 | 2,594,109 | | 1992 | 2,512,389 | | 1991 | 2,416,749 | | 1990 | 2,330,117 | | 1989 | 2,260,728 | | 1988 | 2,198,464 | | 1987 | 2,133,875 | | 1986 | 2,078,129 | | 1985 | 2,027,199 | | 1984 | 1,976,911 | | 1983 | 1,945,149 | | 1982 | 1,896,944 | | 1981 | 1,848,286 | | 1980 | 1,819,288 | | 1979 | 1,790,079 | | 1978 | 1,755,025 | | 1977 | 1,714,474 | | 1976 | 1,678,223 | | 1975 | 1,637,651 | | 1974 | 1,596,062 | | 1973 | 1,572,212 | | 1972 | 1,555,974 | | 1971 | 1,531,085 | | 1970 | 1,496,410 | | 1969 | 1,460,044 | | 1968 | 1,421,007 | | 1967 | 1,384,970 | | 1966 | 1,353,321 | | 1965 | 1,319,177 | | 1964 | 1,279,541 | | 1963 | 1,243,857 | | 1962 | 1,212,966 | | 1961 | 1,179,669 | | 1960 | 1,144,412 |
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