| Year | Value | | 2022 | 8,865,824 | | 2021 | 8,684,851 | | 2020 | 8,531,985 | | 2019 | 8,375,041 | | 2018 | 8,209,306 | | 2017 | 8,045,513 | | 2016 | 7,884,198 | | 2015 | 7,724,692 | | 2014 | 7,566,988 | | 2013 | 7,417,238 | | 2012 | 7,274,496 | | 2011 | 7,136,149 | | 2010 | 7,000,447 | | 2009 | 6,869,011 | | 2008 | 6,702,316 | | 2007 | 6,579,915 | | 2006 | 6,459,778 | | 2005 | 6,342,289 | | 2004 | 6,227,239 | | 2003 | 6,113,918 | | 2002 | 6,000,381 | | 2001 | 5,876,682 | | 2000 | 5,735,757 | | 1999 | 5,582,264 | | 1998 | 5,438,029 | | 1997 | 5,311,285 | | 1996 | 5,176,476 | | 1995 | 5,038,520 | | 1994 | 4,900,510 | | 1993 | 4,769,938 | | 1992 | 4,639,645 | | 1991 | 4,477,014 | | 1990 | 4,210,729 | | 1989 | 4,077,721 | | 1988 | 4,004,463 | | 1987 | 3,934,022 | | 1986 | 3,866,349 | | 1985 | 3,802,419 | | 1984 | 3,731,413 | | 1983 | 3,678,408 | | 1982 | 3,599,159 | | 1981 | 3,518,466 | | 1980 | 3,435,249 | | 1979 | 3,339,820 | | 1978 | 3,241,222 | | 1977 | 3,159,569 | | 1976 | 3,075,582 | | 1975 | 2,993,516 | | 1974 | 2,911,784 | | 1973 | 2,812,295 | | 1972 | 2,686,849 | | 1971 | 2,602,174 | | 1970 | 2,503,959 | | 1969 | 2,404,654 | | 1968 | 2,325,145 | | 1967 | 2,259,135 | | 1966 | 2,146,053 | | 1965 | 2,074,492 | | 1964 | 1,985,742 | | 1963 | 1,891,353 | | 1962 | 1,805,829 | | 1961 | 1,703,972 | | 1960 | 1,624,582 |
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