| Year | Value | | 2024 | 5,500,026 | | 2023 | 5,478,506 | | 2022 | 5,446,052 | | 2021 | 5,413,507 | | 2020 | 5,394,192 | | 2019 | 5,395,494 | | 2018 | 5,410,391 | | 2017 | 5,430,675 | | 2016 | 5,455,167 | | 2015 | 5,469,170 | | 2014 | 5,457,445 | | 2013 | 5,416,409 | | 2012 | 5,357,606 | | 2011 | 5,288,457 | | 2010 | 5,210,809 | | 2009 | 5,137,828 | | 2008 | 5,078,300 | | 2007 | 5,031,920 | | 2006 | 4,995,577 | | 2005 | 4,963,961 | | 2004 | 4,937,526 | | 2003 | 4,918,714 | | 2002 | 4,897,705 | | 2001 | 4,870,611 | | 2000 | 4,845,657 | | 1999 | 4,816,305 | | 1998 | 4,784,559 | | 1997 | 4,757,241 | | 1996 | 4,722,294 | | 1995 | 4,669,285 | | 1994 | 4,598,033 | | 1993 | 4,512,763 | | 1992 | 4,410,036 | | 1991 | 4,292,143 | | 1990 | 4,170,763 | | 1989 | 4,059,705 | | 1988 | 3,959,761 | | 1987 | 3,862,279 | | 1986 | 3,764,112 | | 1985 | 3,660,399 | | 1984 | 3,548,851 | | 1983 | 3,432,358 | | 1982 | 3,314,804 | | 1981 | 3,197,630 | | 1980 | 3,084,854 | | 1979 | 2,979,665 | | 1978 | 2,880,060 | | 1977 | 2,784,360 | | 1976 | 2,692,219 | | 1975 | 2,602,535 |
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