| Year | Value | | 2022 | 9,729,531 | | 2021 | 9,675,022 | | 2020 | 9,579,957 | | 2019 | 9,450,404 | | 2018 | 9,281,300 | | 2017 | 9,114,379 | | 2016 | 8,971,935 | | 2015 | 8,865,948 | | 2014 | 8,775,549 | | 2013 | 8,688,160 | | 2012 | 8,605,184 | | 2011 | 8,521,805 | | 2010 | 8,437,983 | | 2009 | 8,353,799 | | 2008 | 8,268,938 | | 2007 | 8,186,994 | | 2006 | 8,107,283 | | 2005 | 8,028,913 | | 2004 | 7,952,250 | | 2003 | 7,874,834 | | 2002 | 7,794,228 | | 2001 | 7,711,571 | | 2000 | 7,627,655 | | 1999 | 7,541,838 | | 1998 | 7,453,481 | | 1997 | 7,361,319 | | 1996 | 7,266,190 | | 1995 | 7,168,506 | | 1994 | 7,066,850 | | 1993 | 6,961,685 | | 1992 | 6,854,273 | | 1991 | 6,744,934 | | 1990 | 6,636,684 | | 1989 | 6,530,854 | | 1988 | 6,426,615 | | 1987 | 6,324,042 | | 1986 | 6,225,400 | | 1985 | 6,132,837 | | 1984 | 6,046,063 | | 1983 | 5,963,481 | | 1982 | 5,881,381 | | 1981 | 5,798,244 | | 1980 | 5,715,949 | | 1979 | 5,634,857 | | 1978 | 5,553,360 | | 1977 | 5,471,239 | | 1976 | 5,390,249 | | 1975 | 5,309,036 | | 1974 | 5,226,977 | | 1973 | 5,146,349 | | 1972 | 5,068,141 | | 1971 | 4,989,903 | | 1970 | 4,909,600 | | 1969 | 4,829,270 | | 1968 | 4,748,792 | | 1967 | 4,668,181 | | 1966 | 4,588,112 | | 1965 | 4,506,843 | | 1964 | 4,424,102 | | 1963 | 4,342,445 | | 1962 | 4,260,363 | | 1961 | 4,176,394 | | 1960 | 4,092,573 |
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