| Year | Value | | 2022 | 6,780,744 | | 2021 | 6,703,799 | | 2020 | 6,618,695 | | 2019 | 6,530,026 | | 2018 | 6,443,328 | | 2017 | 6,355,404 | | 2016 | 6,266,615 | | 2015 | 6,177,950 | | 2014 | 6,090,721 | | 2013 | 6,005,652 | | 2012 | 5,923,322 | | 2011 | 5,843,939 | | 2010 | 5,768,613 | | 2009 | 5,702,574 | | 2008 | 5,645,148 | | 2007 | 5,590,145 | | 2006 | 5,534,675 | | 2005 | 5,476,878 | | 2004 | 5,416,324 | | 2003 | 5,353,254 | | 2002 | 5,286,512 | | 2001 | 5,211,541 | | 2000 | 5,123,819 | | 1999 | 5,026,031 | | 1998 | 4,923,449 | | 1997 | 4,818,289 | | 1996 | 4,711,655 | | 1995 | 4,603,917 | | 1994 | 4,495,301 | | 1993 | 4,386,202 | | 1992 | 4,277,051 | | 1991 | 4,167,996 | | 1990 | 4,059,195 | | 1989 | 3,951,288 | | 1988 | 3,844,437 | | 1987 | 3,739,050 | | 1986 | 3,636,027 | | 1985 | 3,535,498 | | 1984 | 3,437,892 | | 1983 | 3,343,276 | | 1982 | 3,251,678 | | 1981 | 3,163,299 | | 1980 | 3,078,912 | | 1979 | 2,999,415 | | 1978 | 2,924,370 | | 1977 | 2,852,430 | | 1976 | 2,782,624 | | 1975 | 2,714,664 | | 1974 | 2,648,082 | | 1973 | 2,583,160 | | 1972 | 2,521,508 | | 1971 | 2,463,777 | | 1970 | 2,408,787 | | 1969 | 2,355,122 | | 1968 | 2,301,887 | | 1967 | 2,248,882 | | 1966 | 2,195,955 | | 1965 | 2,143,153 | | 1964 | 2,090,840 | | 1963 | 2,039,390 | | 1962 | 1,989,376 | | 1961 | 1,941,208 | | 1960 | 1,894,829 |
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