| Year | Value | | 2024 | 2,326,735 | | 2023 | 2,282,410 | | 2022 | 2,259,482 | | 2021 | 2,251,555 | | 2020 | 2,217,688 | | 2019 | 2,164,291 | | 2018 | 2,111,678 | | 2017 | 2,056,810 | | 2016 | 2,001,564 | | 2015 | 1,949,826 | | 2014 | 1,884,991 | | 2013 | 1,809,387 | | 2012 | 1,735,507 | | 2011 | 1,648,585 | | 2010 | 1,566,362 | | 2009 | 1,496,338 | | 2008 | 1,418,635 | | 2007 | 1,364,533 | | 2006 | 1,318,645 | | 2005 | 1,248,994 | | 2004 | 1,190,193 | | 2003 | 1,134,738 | | 2002 | 1,057,608 | | 2001 | 998,177 | | 2000 | 990,838 | | 1999 | 984,664 | | 1998 | 957,023 | | 1997 | 931,331 | | 1996 | 906,385 | | 1995 | 879,247 | | 1994 | 844,745 | | 1993 | 783,370 | | 1992 | 700,401 | | 1991 | 647,992 | | 1990 | 639,320 | | 1989 | 630,744 | | 1988 | 611,926 | | 1987 | 603,211 | | 1986 | 602,064 | | 1985 | 597,584 | | 1984 | 578,619 | | 1983 | 558,947 | | 1982 | 558,243 | | 1981 | 601,992 | | 1980 | 660,732 | | 1979 | 681,973 | | 1978 | 676,997 | | 1977 | 661,589 | | 1976 | 646,174 | | 1975 | 630,510 |
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