| Year | Value | | 2022 | 4,629,668 | | 2021 | 4,654,334 | | 2020 | 4,672,304 | | 2019 | 4,678,279 | | 2018 | 4,673,638 | | 2017 | 4,673,310 | | 2016 | 4,681,743 | | 2015 | 4,691,952 | | 2014 | 4,699,323 | | 2013 | 4,709,367 | | 2012 | 4,719,977 | | 2011 | 4,740,061 | | 2010 | 4,750,174 | | 2009 | 4,760,006 | | 2008 | 4,766,498 | | 2007 | 4,774,715 | | 2006 | 4,782,418 | | 2005 | 4,789,543 | | 2004 | 4,799,327 | | 2003 | 4,811,880 | | 2002 | 4,828,263 | | 2001 | 4,844,925 | | 2000 | 4,859,206 | | 1999 | 4,875,505 | | 1998 | 4,893,437 | | 1997 | 4,908,952 | | 1996 | 4,922,451 | | 1995 | 4,935,123 | | 1994 | 4,947,110 | | 1993 | 4,959,327 | | 1992 | 4,970,390 | | 1991 | 4,977,083 | | 1990 | 4,981,614 | | 1989 | 5,038,032 | | 1988 | 5,097,716 | | 1987 | 5,109,530 | | 1986 | 5,122,256 | | 1985 | 5,135,352 | | 1984 | 5,149,737 | | 1983 | 5,165,259 | | 1982 | 5,177,354 | | 1981 | 5,184,439 | | 1980 | 5,188,083 | | 1979 | 5,186,799 | | 1978 | 5,177,833 | | 1977 | 5,160,356 | | 1976 | 5,136,248 | | 1975 | 5,107,479 | | 1974 | 5,077,147 | | 1973 | 5,054,466 | | 1972 | 5,038,188 | | 1971 | 5,023,642 | | 1970 | 5,010,035 | | 1969 | 4,990,265 | | 1968 | 4,967,343 | | 1967 | 4,946,089 | | 1966 | 4,925,252 | | 1965 | 4,908,017 | | 1964 | 4,892,306 | | 1963 | 4,874,757 | | 1962 | 4,859,858 | | 1961 | 4,841,626 | | 1960 | 4,816,675 |
|