| Year | Value | | 2023 | 2,750,721 | | 2022 | 2,865,466 | | 2021 | 2,983,135 | | 2020 | 3,112,414 | | 2019 | 3,223,001 | | 2018 | 3,254,191 | | 2017 | 3,228,825 | | 2016 | 3,182,809 | | 2015 | 3,131,458 | | 2014 | 3,089,702 | | 2013 | 3,054,208 | | 2012 | 3,027,129 | | 2011 | 3,004,837 | | 2010 | 2,995,152 | | 2009 | 3,005,233 | | 2008 | 3,032,536 | | 2007 | 3,055,816 | | 2006 | 3,106,120 | | 2005 | 3,135,018 | | 2004 | 3,163,111 | | 2003 | 3,189,235 | | 2002 | 3,214,738 | | 2001 | 3,240,369 | | 2000 | 3,267,112 | | 1999 | 3,290,276 | | 1998 | 3,306,036 | | 1997 | 3,312,123 | | 1996 | 3,308,896 | | 1995 | 3,300,756 | | 1994 | 3,294,726 | | 1993 | 3,298,905 | | 1992 | 3,315,599 | | 1991 | 3,340,603 | | 1990 | 3,365,541 | | 1989 | 3,376,937 | | 1988 | 3,374,788 | | 1987 | 3,371,200 | | 1986 | 3,368,316 | | 1985 | 3,363,460 | | 1984 | 3,355,576 | | 1983 | 3,341,258 | | 1982 | 3,313,876 | | 1981 | 3,276,385 | | 1980 | 3,232,328 | | 1979 | 3,198,102 | | 1978 | 3,172,380 | | 1977 | 3,138,849 | | 1976 | 3,098,075 | | 1975 | 3,084,287 | | 1974 | 3,088,655 |
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