| Year | Value | | 2022 | 8,776,387 | | 2021 | 8,775,061 | | 2020 | 8,739,014 | | 2019 | 8,660,635 | | 2018 | 8,546,092 | | 2017 | 8,402,555 | | 2016 | 8,237,678 | | 2015 | 8,061,941 | | 2014 | 7,884,016 | | 2013 | 7,715,467 | | 2012 | 7,561,369 | | 2011 | 7,418,630 | | 2010 | 7,289,850 | | 2009 | 7,174,439 | | 2008 | 7,064,452 | | 2007 | 6,965,306 | | 2006 | 6,887,942 | | 2005 | 6,828,368 | | 2004 | 6,782,805 | | 2003 | 6,744,330 | | 2002 | 6,694,618 | | 2001 | 6,620,209 | | 2000 | 6,519,101 | | 1999 | 6,391,770 | | 1998 | 6,242,043 | | 1997 | 6,077,643 | | 1996 | 5,905,054 | | 1995 | 5,729,254 | | 1994 | 5,553,323 | | 1993 | 5,378,302 | | 1992 | 5,207,374 | | 1991 | 5,044,059 | | 1990 | 4,887,683 | | 1989 | 4,738,034 | | 1988 | 4,579,843 | | 1987 | 4,401,672 | | 1986 | 4,211,517 | | 1985 | 4,013,278 | | 1984 | 3,816,732 | | 1983 | 3,646,567 | | 1982 | 3,513,923 | | 1981 | 3,408,480 | | 1980 | 3,322,634 | | 1979 | 3,247,523 | | 1978 | 3,175,379 | | 1977 | 3,101,760 | | 1976 | 3,027,273 | | 1975 | 2,954,786 | | 1974 | 2,885,265 | | 1973 | 2,822,561 | | 1972 | 2,769,197 | | 1971 | 2,721,939 | | 1970 | 2,677,249 | | 1969 | 2,632,164 | | 1968 | 2,582,623 | | 1967 | 2,526,208 | | 1966 | 2,462,950 | | 1965 | 2,394,544 | | 1964 | 2,321,743 | | 1963 | 2,244,563 | | 1962 | 2,163,575 | | 1961 | 2,080,404 | | 1960 | 1,996,714 |
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