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Year
1996
9,025
1997
9,276
1998
8,875
1999
8,477
2000
8,428
2001
7,311
2002
7,502
2003
6,926
2004
5,974
2005
6,098
2006
5,361
2007
5,095
2008
5,295
2009
4,705
2010
4,360
2011
4,328
2012
4,206
2013
4,212
2014
4,212
2015
4,051
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