| Year | Value | | 2023 | 4,932,158 | | 2022 | 4,936,942 | | 2021 | 5,228,804 | | 2020 | 5,248,079 | | 2019 | 5,256,027 | | 2018 | 5,269,340 | | 2017 | 5,283,539 | | 2016 | 5,298,039 | | 2015 | 5,310,996 | | 2014 | 5,320,503 | | 2013 | 5,326,274 | | 2012 | 5,331,472 | | 2011 | 5,337,678 | | 2010 | 5,347,166 | | 2009 | 5,357,245 | | 2008 | 5,366,322 | | 2007 | 5,378,166 | | 2006 | 5,391,557 | | 2005 | 5,406,009 | | 2004 | 5,419,782 | | 2003 | 5,433,321 | | 2002 | 5,448,708 | | 2001 | 5,539,603 | | 2000 | 5,629,167 | | 1999 | 5,638,810 | | 1998 | 5,652,100 | | 1997 | 5,671,407 | | 1996 | 5,687,307 | | 1995 | 5,697,800 | | 1994 | 5,704,237 | | 1993 | 5,704,408 | | 1992 | 5,726,692 | | 1991 | 5,759,256 | | 1990 | 5,786,939 | | 1989 | 5,861,908 | | 1988 | 5,900,092 | | 1987 | 5,862,424 | | 1986 | 5,822,722 | | 1985 | 5,787,617 | | 1984 | 5,743,706 | | 1983 | 5,685,942 | | 1982 | 5,627,272 | | 1981 | 5,566,106 | | 1980 | 5,503,013 | | 1979 | 5,402,887 | | 1978 | 5,317,153 | | 1977 | 5,232,150 | | 1976 | 5,126,058 | | 1975 | 5,019,834 | | 1974 | 4,905,140 |
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