- 2002 to 2002 1,082
- 2003 to 2003 1,866
- 2004 to 2004 1,344
- 2005 to 2005 1,797
- 2006 to 2006 1,999
- 2007 to 2007 2,240
- 2008 to 2008 2,190
- 2009 to 2009 2,223
- 2010 to 2010 2,702
- 2011 to 2011 3,188
- 2012 to 2012 3,328
- 2013 to 2013 3,118
- 2014 to 2014 3,026
- 2015 to 2015 3,077