| Year | Value | | 2022 | 6,213,590 | | 2021 | 6,170,420 | | 2020 | 6,127,721 | | 2019 | 6,092,028 | | 2018 | 6,063,868 | | 2017 | 6,040,948 | | 2016 | 6,019,706 | | 2015 | 6,005,880 | | 2014 | 6,008,299 | | 2013 | 6,012,059 | | 2012 | 6,004,355 | | 2011 | 5,991,605 | | 2010 | 5,968,509 | | 2009 | 5,921,682 | | 2008 | 5,846,448 | | 2007 | 5,763,008 | | 2006 | 5,705,212 | | 2005 | 5,683,305 | | 2004 | 5,660,636 | | 2003 | 5,615,082 | | 2002 | 5,563,667 | | 2001 | 5,503,427 | | 2000 | 5,443,882 | | 1999 | 5,400,030 | | 1998 | 5,354,882 | | 1997 | 5,296,973 | | 1996 | 5,227,551 | | 1995 | 5,155,885 | | 1994 | 5,083,709 | | 1993 | 5,006,125 | | 1992 | 4,924,880 | | 1991 | 4,840,398 | | 1990 | 4,755,547 | | 1989 | 4,679,728 | | 1988 | 4,609,997 | | 1987 | 4,542,123 | | 1986 | 4,482,882 | | 1985 | 4,425,884 | | 1984 | 4,364,386 | | 1983 | 4,300,915 | | 1982 | 4,237,500 | | 1981 | 4,175,691 | | 1980 | 4,109,373 | | 1979 | 4,026,219 | | 1978 | 3,922,913 | | 1977 | 3,811,904 | | 1976 | 3,709,149 | | 1975 | 3,637,753 | | 1974 | 3,604,086 | | 1973 | 3,575,455 | | 1972 | 3,536,343 | | 1971 | 3,493,158 | | 1970 | 3,449,489 | | 1969 | 3,405,821 | | 1968 | 3,357,217 | | 1967 | 3,302,159 | | 1966 | 3,245,564 | | 1965 | 3,188,148 | | 1964 | 3,127,465 | | 1963 | 3,068,232 | | 1962 | 3,015,395 | | 1961 | 2,965,965 | | 1960 | 2,913,177 |
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