| Year | Value | | 2023 | 10,112,555 | | 2022 | 10,141,756 | | 2021 | 10,137,750 | | 2020 | 10,093,121 | | 2019 | 10,024,283 | | 2018 | 9,939,771 | | 2017 | 9,854,033 | | 2016 | 9,757,812 | | 2015 | 9,649,341 | | 2014 | 9,535,079 | | 2013 | 9,416,801 | | 2012 | 9,295,784 | | 2011 | 9,173,082 | | 2010 | 9,054,332 | | 2009 | 8,947,243 | | 2008 | 8,763,400 | | 2007 | 8,581,300 | | 2006 | 8,484,550 | | 2005 | 8,391,850 | | 2004 | 8,306,500 | | 2003 | 8,234,100 | | 2002 | 8,171,950 | | 2001 | 8,111,200 | | 2000 | 8,048,600 | | 1999 | 7,982,750 | | 1998 | 7,913,000 | | 1997 | 7,838,250 | | 1996 | 7,763,000 | | 1995 | 7,684,850 | | 1994 | 7,596,550 | | 1993 | 7,494,800 | | 1992 | 7,382,050 | | 1991 | 7,271,300 | | 1990 | 7,175,200 | | 1989 | 7,076,550 | | 1988 | 6,974,600 | | 1987 | 6,875,350 | | 1986 | 6,770,300 | | 1985 | 6,670,150 | | 1984 | 6,567,850 | | 1983 | 6,459,800 | | 1982 | 6,357,550 | | 1981 | 6,257,750 | | 1980 | 6,160,500 | | 1979 | 6,071,300 | | 1978 | 5,976,150 | | 1977 | 5,876,150 | | 1976 | 5,781,000 | | 1975 | 5,689,050 | | 1974 | 5,594,100 |
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