| Year | Value | | 2024 | 3,267,076 | | 2023 | 3,262,035 | | 2022 | 3,262,772 | | 2021 | 3,271,177 | | 2020 | 3,312,486 | | 2019 | 3,358,858 | | 2018 | 3,365,159 | | 2017 | 3,346,188 | | 2016 | 3,337,984 | | 2015 | 3,331,275 | | 2014 | 3,318,961 | | 2013 | 3,305,672 | | 2012 | 3,285,204 | | 2011 | 3,243,723 | | 2010 | 3,162,482 | | 2009 | 3,047,198 | | 2008 | 2,924,652 | | 2007 | 2,828,632 | | 2006 | 2,795,859 | | 2005 | 2,754,462 | | 2004 | 2,723,385 | | 2003 | 2,697,595 | | 2002 | 2,673,821 | | 2001 | 2,649,575 | | 2000 | 2,623,680 | | 1999 | 2,594,501 | | 1998 | 2,559,137 | | 1997 | 2,516,164 | | 1996 | 2,465,414 | | 1995 | 2,405,158 | | 1994 | 2,333,328 | | 1993 | 2,255,023 | | 1992 | 2,177,224 | | 1991 | 2,102,244 | | 1990 | 2,029,684 | | 1989 | 1,959,466 | | 1988 | 1,891,521 | | 1987 | 1,825,082 | | 1986 | 1,759,637 | | 1985 | 1,693,649 | | 1984 | 1,627,720 | | 1983 | 1,563,378 | | 1982 | 1,502,316 | | 1981 | 1,453,297 | | 1980 | 1,413,734 | | 1979 | 1,378,289 | | 1978 | 1,348,434 | | 1977 | 1,320,928 | | 1976 | 1,295,352 | | 1975 | 1,264,664 |
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