| Year | Value | | 2023 | 5,178,464 | | 2022 | 5,175,175 | | 2021 | 5,176,589 | | 2020 | 5,156,200 | | 2019 | 5,123,706 | | 2018 | 5,087,628 | | 2017 | 5,055,686 | | 2016 | 5,020,488 | | 2015 | 4,975,274 | | 2014 | 4,922,666 | | 2013 | 4,868,452 | | 2012 | 4,813,149 | | 2011 | 4,756,745 | | 2010 | 4,701,897 | | 2009 | 4,652,844 | | 2008 | 4,564,644 | | 2007 | 4,478,388 | | 2006 | 4,436,760 | | 2005 | 4,397,250 | | 2004 | 4,361,277 | | 2003 | 4,330,999 | | 2002 | 4,305,379 | | 2001 | 4,280,760 | | 2000 | 4,255,061 | | 1999 | 4,226,501 | | 1998 | 4,182,975 | | 1997 | 4,125,526 | | 1996 | 4,068,821 | | 1995 | 4,010,503 | | 1994 | 3,945,945 | | 1993 | 3,884,462 | | 1992 | 3,827,472 | | 1991 | 3,772,125 | | 1990 | 3,725,370 | | 1989 | 3,677,236 | | 1988 | 3,628,241 | | 1987 | 3,575,263 | | 1986 | 3,513,594 | | 1985 | 3,455,353 | | 1984 | 3,396,791 | | 1983 | 3,340,683 | | 1982 | 3,292,376 | | 1981 | 3,245,130 | | 1980 | 3,198,877 | | 1979 | 3,156,473 | | 1978 | 3,105,173 | | 1977 | 3,046,544 | | 1976 | 2,992,079 | | 1975 | 2,943,464 | | 1974 | 2,896,691 |
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