| Year | Value | | 2022 | 3,565,773 | | 2021 | 3,566,464 | | 2020 | 3,566,167 | | 2019 | 3,559,929 | | 2018 | 3,548,811 | | 2017 | 3,535,867 | | 2016 | 3,521,044 | | 2015 | 3,505,243 | | 2014 | 3,488,305 | | 2013 | 3,470,209 | | 2012 | 3,454,705 | | 2011 | 3,443,860 | | 2010 | 3,431,952 | | 2009 | 3,419,056 | | 2008 | 3,405,346 | | 2007 | 3,390,940 | | 2006 | 3,375,431 | | 2005 | 3,359,918 | | 2004 | 3,344,495 | | 2003 | 3,328,768 | | 2002 | 3,312,530 | | 2001 | 3,296,749 | | 2000 | 3,283,512 | | 1999 | 3,268,951 | | 1998 | 3,253,531 | | 1997 | 3,237,796 | | 1996 | 3,221,153 | | 1995 | 3,203,241 | | 1994 | 3,184,047 | | 1993 | 3,162,725 | | 1992 | 3,139,596 | | 1991 | 3,145,804 | | 1990 | 3,152,342 | | 1989 | 3,156,924 | | 1988 | 3,159,607 | | 1987 | 3,160,917 | | 1986 | 3,160,879 | | 1985 | 3,159,674 | | 1984 | 3,156,973 | | 1983 | 3,152,976 | | 1982 | 3,147,014 | | 1981 | 3,139,103 | | 1980 | 3,128,979 | | 1979 | 3,116,959 | | 1978 | 3,102,847 | | 1977 | 3,087,149 | | 1976 | 3,061,445 | | 1975 | 3,009,287 | | 1974 | 2,957,921 | | 1973 | 2,907,229 | | 1972 | 2,857,635 | | 1971 | 2,809,116 | | 1970 | 2,761,688 | | 1969 | 2,715,435 | | 1968 | 2,670,156 | | 1967 | 2,626,042 | | 1966 | 2,583,020 | | 1965 | 2,541,040 | | 1964 | 2,500,005 | | 1963 | 2,459,925 | | 1962 | 2,420,613 | | 1961 | 2,382,156 | | 1960 | 2,344,558 |
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