| Year | Value | | 2022 | 11,623,246 | | 2021 | 11,454,802 | | 2020 | 11,285,898 | | 2019 | 11,097,565 | | 2018 | 10,859,572 | | 2017 | 10,630,944 | | 2016 | 10,444,726 | | 2015 | 10,267,878 | | 2014 | 10,095,187 | | 2013 | 9,925,137 | | 2012 | 9,752,988 | | 2011 | 9,577,064 | | 2010 | 9,396,971 | | 2009 | 9,213,492 | | 2008 | 9,031,505 | | 2007 | 8,850,960 | | 2006 | 8,672,589 | | 2005 | 8,497,612 | | 2004 | 8,325,670 | | 2003 | 8,155,754 | | 2002 | 7,988,495 | | 2001 | 7,809,948 | | 2000 | 7,613,657 | | 1999 | 7,421,907 | | 1998 | 7,233,320 | | 1997 | 7,047,051 | | 1996 | 6,862,246 | | 1995 | 6,678,722 | | 1994 | 6,496,985 | | 1993 | 6,316,767 | | 1992 | 6,136,630 | | 1991 | 5,953,219 | | 1990 | 5,756,815 | | 1989 | 5,545,968 | | 1988 | 5,338,423 | | 1987 | 5,134,094 | | 1986 | 4,934,186 | | 1985 | 4,739,595 | | 1984 | 4,551,010 | | 1983 | 4,367,855 | | 1982 | 4,184,975 | | 1981 | 3,999,894 | | 1980 | 3,820,674 | | 1979 | 3,647,039 | | 1978 | 3,479,284 | | 1977 | 3,317,270 | | 1976 | 3,161,030 | | 1975 | 3,010,224 | | 1974 | 2,865,144 | | 1973 | 2,748,124 | | 1972 | 2,636,450 | | 1971 | 2,528,501 | | 1970 | 2,424,323 | | 1969 | 2,323,492 | | 1968 | 2,226,277 | | 1967 | 2,132,442 | | 1966 | 2,042,335 | | 1965 | 1,955,605 | | 1964 | 1,872,305 | | 1963 | 1,792,525 | | 1962 | 1,714,583 | | 1961 | 1,637,654 | | 1960 | 1,564,540 |
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