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1997
1
1998
to
1999
5
2000
to
2001
8
2002
to
2003
11
2004
to
2005
8
2006
to
2007
8
2008
to
2009
10
2010
to
2011
17
2012
to
2013
5
2014
to
2015
5
2016
to
2017
0
2018
1