| Year | Value | | 2022 | 7,171,418 | | 2021 | 7,264,824 | | 2020 | 7,359,265 | | 2019 | 7,445,123 | | 2018 | 7,469,454 | | 2017 | 7,473,222 | | 2016 | 7,510,121 | | 2015 | 7,543,106 | | 2014 | 7,557,557 | | 2013 | 7,592,581 | | 2012 | 7,646,092 | | 2011 | 7,707,904 | | 2010 | 7,783,661 | | 2009 | 7,871,849 | | 2008 | 7,957,333 | | 2007 | 8,048,629 | | 2006 | 8,154,574 | | 2005 | 8,264,885 | | 2004 | 8,382,810 | | 2003 | 8,521,999 | | 2002 | 8,654,457 | | 2001 | 8,748,274 | | 2000 | 8,814,234 | | 1999 | 8,853,726 | | 1998 | 8,864,399 | | 1997 | 8,858,194 | | 1996 | 8,858,316 | | 1995 | 8,875,186 | | 1994 | 8,913,037 | | 1993 | 8,973,894 | | 1992 | 9,056,603 | | 1991 | 9,147,272 | | 1990 | 9,230,322 | | 1989 | 9,305,549 | | 1988 | 9,366,930 | | 1987 | 9,405,282 | | 1986 | 9,413,392 | | 1985 | 9,385,638 | | 1984 | 9,315,898 | | 1983 | 9,209,088 | | 1982 | 9,072,713 | | 1981 | 8,915,372 | | 1980 | 8,745,347 | | 1979 | 8,572,131 | | 1978 | 8,409,734 | | 1977 | 8,262,273 | | 1976 | 8,126,266 | | 1975 | 8,004,610 | | 1974 | 7,896,638 | | 1973 | 7,793,565 | | 1972 | 7,701,775 | | 1971 | 7,633,915 | | 1970 | 7,585,087 | | 1969 | 7,551,721 | | 1968 | 7,526,723 | | 1967 | 7,489,865 | | 1966 | 7,426,259 | | 1965 | 7,332,654 | | 1964 | 7,209,201 | | 1963 | 7,060,530 | | 1962 | 6,895,992 | | 1961 | 6,722,784 | | 1960 | 6,545,328 |
|