| Year | Value | | 2022 | 6,973,585 | | 2021 | 6,822,014 | | 2020 | 6,668,468 | | 2019 | 6,472,954 | | 2018 | 6,256,477 | | 2017 | 6,064,325 | | 2016 | 5,897,115 | | 2015 | 5,737,772 | | 2014 | 5,590,889 | | 2013 | 5,448,654 | | 2012 | 5,285,350 | | 2011 | 5,108,741 | | 2010 | 4,935,770 | | 2009 | 4,773,167 | | 2008 | 4,626,059 | | 2007 | 4,492,261 | | 2006 | 4,366,395 | | 2005 | 4,245,635 | | 2004 | 4,130,702 | | 2003 | 4,023,163 | | 2002 | 3,922,953 | | 2001 | 3,832,081 | | 2000 | 3,751,540 | | 1999 | 3,680,025 | | 1998 | 3,616,361 | | 1997 | 3,558,830 | | 1996 | 3,501,407 | | 1995 | 3,443,458 | | 1994 | 3,394,806 | | 1993 | 3,344,726 | | 1992 | 3,283,310 | | 1991 | 3,217,543 | | 1990 | 3,150,586 | | 1989 | 3,083,000 | | 1988 | 3,017,912 | | 1987 | 2,952,158 | | 1986 | 2,882,178 | | 1985 | 2,814,142 | | 1984 | 2,749,519 | | 1983 | 2,690,408 | | 1982 | 2,628,957 | | 1981 | 2,561,270 | | 1980 | 2,497,944 | | 1979 | 2,433,073 | | 1978 | 2,362,333 | | 1977 | 2,296,952 | | 1976 | 2,236,085 | | 1975 | 2,174,700 | | 1974 | 2,114,125 | | 1973 | 2,055,319 | | 1972 | 1,999,178 | | 1971 | 1,945,213 | | 1970 | 1,892,491 | | 1969 | 1,841,341 | | 1968 | 1,791,256 | | 1967 | 1,742,830 | | 1966 | 1,696,882 | | 1965 | 1,652,895 | | 1964 | 1,610,617 | | 1963 | 1,570,445 | | 1962 | 1,532,447 | | 1961 | 1,496,092 | | 1960 | 1,461,777 |
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