| Year | Value | | 2022 | 4,438,172 | | 2021 | 4,377,152 | | 2020 | 4,322,308 | | 2019 | 4,279,970 | | 2018 | 4,249,078 | | 2017 | 4,232,837 | | 2016 | 4,223,253 | | 2015 | 4,219,611 | | 2014 | 4,226,169 | | 2013 | 4,227,501 | | 2012 | 4,225,028 | | 2011 | 4,219,483 | | 2010 | 4,203,116 | | 2009 | 4,166,194 | | 2008 | 4,102,130 | | 2007 | 4,014,813 | | 2006 | 3,911,935 | | 2005 | 3,804,714 | | 2004 | 3,698,535 | | 2003 | 3,588,215 | | 2002 | 3,472,005 | | 2001 | 3,358,094 | | 2000 | 3,244,541 | | 1999 | 3,126,035 | | 1998 | 3,009,316 | | 1997 | 2,904,465 | | 1996 | 2,811,818 | | 1995 | 2,729,554 | | 1994 | 2,659,047 | | 1993 | 2,600,436 | | 1992 | 2,548,919 | | 1991 | 2,501,566 | | 1990 | 2,454,638 | | 1989 | 2,405,889 | | 1988 | 2,357,151 | | 1987 | 2,306,268 | | 1986 | 2,253,024 | | 1985 | 2,197,885 | | 1984 | 2,140,105 | | 1983 | 2,080,314 | | 1982 | 2,022,932 | | 1981 | 1,970,169 | | 1980 | 1,920,564 | | 1979 | 1,873,318 | | 1978 | 1,826,978 | | 1977 | 1,777,442 | | 1976 | 1,724,070 | | 1975 | 1,666,862 | | 1974 | 1,611,422 | | 1973 | 1,570,068 | | 1972 | 1,542,461 | | 1971 | 1,514,813 | | 1970 | 1,475,687 | | 1969 | 1,418,459 | | 1968 | 1,337,291 | | 1967 | 1,240,294 | | 1966 | 1,148,932 | | 1965 | 1,076,723 | | 1964 | 1,026,607 | | 1963 | 998,681 | | 1962 | 989,286 | | 1961 | 991,373 | | 1960 | 997,887 |
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