| Year | Value | | 2022 | 7,707,355 | | 2021 | 7,445,898 | | 2020 | 7,431,251 | | 2019 | 7,506,739 | | 2018 | 7,504,873 | | 2017 | 7,509,817 | | 2016 | 7,500,642 | | 2015 | 7,390,721 | | 2014 | 7,224,999 | | 2013 | 7,049,670 | | 2012 | 6,886,793 | | 2011 | 6,758,636 | | 2010 | 6,675,316 | | 2009 | 6,576,536 | | 2008 | 6,497,981 | | 2007 | 6,420,880 | | 2006 | 6,296,032 | | 2005 | 6,127,727 | | 2004 | 5,940,011 | | 2003 | 5,760,183 | | 2002 | 5,603,657 | | 2001 | 5,483,406 | | 2000 | 5,379,513 | | 1999 | 5,197,930 | | 1998 | 4,864,466 | | 1997 | 4,446,536 | | 1996 | 4,020,993 | | 1995 | 3,656,897 | | 1994 | 3,537,653 | | 1993 | 3,724,156 | | 1992 | 4,047,144 | | 1991 | 4,361,830 | | 1990 | 4,590,737 | | 1989 | 4,679,105 | | 1988 | 4,655,279 | | 1987 | 4,592,357 | | 1986 | 4,529,306 | | 1985 | 4,469,349 | | 1984 | 4,391,643 | | 1983 | 4,308,931 | | 1982 | 4,230,407 | | 1981 | 4,155,875 | | 1980 | 4,082,744 | | 1979 | 3,985,569 | | 1978 | 3,861,983 | | 1977 | 3,718,958 | | 1976 | 3,566,070 | | 1975 | 3,408,945 | | 1974 | 3,261,351 | | 1973 | 3,148,514 | | 1972 | 3,051,115 | | 1971 | 2,966,244 | | 1970 | 2,905,245 | | 1969 | 2,871,422 | | 1968 | 2,849,491 | | 1967 | 2,829,067 | | 1966 | 2,805,308 | | 1965 | 2,783,322 | | 1964 | 2,759,719 | | 1963 | 2,721,383 | | 1962 | 2,683,720 | | 1961 | 2,645,299 | | 1960 | 2,601,732 |
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