| Year | Value | | 2024 | 5,001,274 | | 2023 | 4,975,494 | | 2022 | 4,966,581 | | 2021 | 4,961,161 | | 2020 | 4,936,921 | | 2019 | 4,900,577 | | 2018 | 4,852,143 | | 2017 | 4,798,347 | | 2016 | 4,737,324 | | 2015 | 4,674,067 | | 2014 | 4,612,413 | | 2013 | 4,548,349 | | 2012 | 4,482,635 | | 2011 | 4,416,337 | | 2010 | 4,352,435 | | 2009 | 4,294,399 | | 2008 | 4,198,756 | | 2007 | 4,102,912 | | 2006 | 4,047,790 | | 2005 | 3,994,600 | | 2004 | 3,945,223 | | 2003 | 3,903,101 | | 2002 | 3,866,571 | | 2001 | 3,830,440 | | 2000 | 3,793,539 | | 1999 | 3,756,249 | | 1998 | 3,730,025 | | 1997 | 3,712,724 | | 1996 | 3,694,179 | | 1995 | 3,674,347 | | 1994 | 3,650,605 | | 1993 | 3,610,338 | | 1992 | 3,554,578 | | 1991 | 3,499,175 | | 1990 | 3,449,830 | | 1989 | 3,399,314 | | 1988 | 3,346,359 | | 1987 | 3,300,087 | | 1986 | 3,256,706 | | 1985 | 3,214,797 | | 1984 | 3,171,059 | | 1983 | 3,119,117 | | 1982 | 3,065,174 | | 1981 | 3,012,620 | | 1980 | 2,961,623 | | 1979 | 2,914,827 | | 1978 | 2,870,977 | | 1977 | 2,829,606 | | 1976 | 2,788,921 | | 1975 | 2,745,586 |
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