| Year | Value | | 2019 | 2,375,744 | | 2018 | 2,300,924 | | 2017 | 2,228,868 | | 2016 | 2,160,011 | | 2015 | 2,094,147 | | 2014 | 2,028,906 | | 2013 | 1,966,996 | | 2012 | 1,907,782 | | 2011 | 1,851,372 | | 2010 | 1,828,774 | | 2009 | 1,766,836 | | 2008 | 1,706,639 | | 2007 | 1,647,658 | | 2006 | 1,589,866 | | 2005 | 1,532,813 | | 2004 | 1,473,048 | | 2003 | 1,414,116 | | 2002 | 1,356,359 | | 2001 | 1,300,578 | | 2000 | 1,247,811 | | 1999 | 1,195,668 | | 1998 | 1,146,146 | | 1997 | 1,098,855 | | 1996 | 1,053,173 | | 1995 | 1,009,202 | | 1994 | 961,709 | | 1993 | 915,698 | | 1992 | 871,641 | | 1991 | 842,473 | | 1990 | 816,094 |
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