| Year | Value | | 2022 | 8,378,759 | | 2021 | 8,459,382 | | 2020 | 8,528,388 | | 2019 | 8,511,650 | | 2018 | 8,485,202 | | 2017 | 8,466,513 | | 2016 | 8,446,960 | | 2015 | 8,445,266 | | 2014 | 8,463,623 | | 2013 | 8,482,139 | | 2012 | 8,505,100 | | 2011 | 8,511,794 | | 2010 | 8,484,693 | | 2009 | 8,433,780 | | 2008 | 8,371,303 | | 2007 | 8,308,341 | | 2006 | 8,246,206 | | 2005 | 8,180,275 | | 2004 | 8,114,802 | | 2003 | 8,052,786 | | 2002 | 7,991,509 | | 2001 | 7,919,906 | | 2000 | 7,857,551 | | 1999 | 7,812,670 | | 1998 | 7,770,011 | | 1997 | 7,714,274 | | 1996 | 7,663,691 | | 1995 | 7,617,319 | | 1994 | 7,569,094 | | 1993 | 7,518,737 | | 1992 | 7,462,054 | | 1991 | 7,392,680 | | 1990 | 7,287,341 | | 1989 | 7,191,693 | | 1988 | 7,135,291 | | 1987 | 7,090,422 | | 1986 | 7,047,717 | | 1985 | 7,005,470 | | 1984 | 6,959,420 | | 1983 | 6,905,833 | | 1982 | 6,846,785 | | 1981 | 6,785,832 | | 1980 | 6,686,402 | | 1979 | 6,575,885 | | 1978 | 6,449,432 | | 1977 | 6,321,574 | | 1976 | 6,195,478 | | 1975 | 6,055,755 | | 1974 | 5,955,084 | | 1973 | 5,888,911 | | 1972 | 5,817,963 | | 1971 | 5,735,846 | | 1970 | 5,646,740 | | 1969 | 5,560,616 | | 1968 | 5,466,737 | | 1967 | 5,357,301 | | 1966 | 5,239,942 | | 1965 | 5,127,549 | | 1964 | 5,029,578 | | 1963 | 4,937,007 | | 1962 | 4,844,217 | | 1961 | 4,740,951 | | 1960 | 4,660,434 |
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