Uscenti candidati
Riconfermati
% riconfermati
2009
105
77
73%
2010
31
16
52%
2011
64
45
70%
2012
55
27
49%
2013
31
19
61%
2014
105
64
61%
2015
48
25
52%
2016
62
28
45%
2017
85
49
58%
2018
54
25
44%