Year	Number
1993	13.16145
1994	13.2229
1995	13.13793
1996	12.13937
2001	13.34328
2002	13.09562
2003	12.93776
2004	12.26152
2005	12.33826
2006	11.24523
2007	12.25676
2008	11.84547
2009	11.48848
2010	11.24498
2011	11.11358
2012	11.1053
2013	11.26948