year | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2016 | 2017 | total | mean |
east | 1 | 4 | 8 | 15 | 25 | 25 | 28 | 52 | 60 | 41 | 55 | 314 | 28.545454 |
Central | - | - | - | - | 2 | 2 | 2 | 3 | 2 | 2 | 3 | 16 | 2.2857142 |
west | 1 | 3 | 3 | 3 | 4 | 2 | 2 | 3 | 4 | 5 | 10 | 40 | 3.6363636 |
northeast | - | - | - | - | - | - | - | 2 | 1 | - | 1 | 4 | 1.3333333 |
total | 2 | 7 | 11 | 18 | 31 | 29 | 32 | 60 | 67 | 48 | 69 | 374 | 35.800865 |