| Year | Value | | 2022 | 7,972,107 | | 2021 | 8,063,989 | | 2020 | 8,193,967 | | 2019 | 8,311,034 | | 2018 | 8,398,539 | | 2017 | 8,455,562 | | 2016 | 8,509,723 | | 2015 | 8,566,953 | | 2014 | 8,632,707 | | 2013 | 8,708,147 | | 2012 | 8,766,143 | | 2011 | 8,794,886 | | 2010 | 8,827,648 | | 2009 | 8,807,342 | | 2008 | 8,764,745 | | 2007 | 8,707,238 | | 2006 | 8,668,286 | | 2005 | 8,658,921 | | 2004 | 8,651,396 | | 2003 | 8,625,020 | | 2002 | 8,594,732 | | 2001 | 8,571,769 | | 2000 | 8,542,663 | | 1999 | 8,510,167 | | 1998 | 8,522,162 | | 1997 | 8,590,218 | | 1996 | 8,687,613 | | 1995 | 8,815,604 | | 1994 | 8,961,378 | | 1993 | 9,078,465 | | 1992 | 9,134,305 | | 1991 | 9,201,467 | | 1990 | 9,259,394 | | 1989 | 9,281,654 | | 1988 | 9,313,092 | | 1987 | 9,387,432 | | 1986 | 9,512,493 | | 1985 | 9,660,231 | | 1984 | 9,808,541 | | 1983 | 9,937,822 | | 1982 | 10,039,549 | | 1981 | 10,121,841 | | 1980 | 10,202,125 | | 1979 | 10,318,523 | | 1978 | 10,481,709 | | 1977 | 10,678,857 | | 1976 | 10,929,005 | | 1975 | 11,185,382 | | 1974 | 11,418,851 | | 1973 | 11,648,177 | | 1972 | 11,857,087 | | 1971 | 12,041,575 | | 1970 | 12,264,811 | | 1969 | 12,503,119 | | 1968 | 12,672,133 | | 1967 | 12,753,762 | | 1966 | 12,755,145 | | 1965 | 12,678,861 | | 1964 | 12,527,953 | | 1963 | 12,337,778 | | 1962 | 12,149,576 | | 1961 | 11,967,548 | | 1960 | 11,803,564 |
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