| Year | Value | | 2022 | 8,816,497 | | 2021 | 8,674,634 | | 2020 | 8,526,730 | | 2019 | 8,375,929 | | 2018 | 8,224,798 | | 2017 | 8,073,041 | | 2016 | 7,922,068 | | 2015 | 7,772,149 | | 2014 | 7,622,759 | | 2013 | 7,474,978 | | 2012 | 7,330,039 | | 2011 | 7,186,286 | | 2010 | 7,045,311 | | 2009 | 6,907,386 | | 2008 | 6,773,862 | | 2007 | 6,645,177 | | 2006 | 6,518,798 | | 2005 | 6,396,339 | | 2004 | 6,279,490 | | 2003 | 6,167,001 | | 2002 | 6,046,772 | | 2001 | 5,916,704 | | 2000 | 5,791,518 | | 1999 | 5,670,361 | | 1998 | 5,553,767 | | 1997 | 5,440,790 | | 1996 | 5,328,251 | | 1995 | 5,213,621 | | 1994 | 5,095,313 | | 1993 | 4,973,585 | | 1992 | 4,850,099 | | 1991 | 4,727,170 | | 1990 | 4,604,798 | | 1989 | 4,484,256 | | 1988 | 4,366,848 | | 1987 | 4,265,373 | | 1986 | 4,166,856 | | 1985 | 4,072,245 | | 1984 | 3,983,222 | | 1983 | 3,898,649 | | 1982 | 3,816,771 | | 1981 | 3,738,159 | | 1980 | 3,663,652 | | 1979 | 3,593,704 | | 1978 | 3,527,956 | | 1977 | 3,465,362 | | 1976 | 3,400,315 | | 1975 | 3,347,126 | | 1974 | 3,293,746 | | 1973 | 3,235,967 | | 1972 | 3,176,185 | | 1971 | 3,116,641 | | 1970 | 3,057,421 | | 1969 | 3,000,535 | | 1968 | 2,943,838 | | 1967 | 2,887,421 | | 1966 | 2,831,643 | | 1965 | 2,777,211 | | 1964 | 2,724,373 | | 1963 | 2,672,814 | | 1962 | 2,621,784 | | 1961 | 2,570,935 | | 1960 | 2,520,346 |
|