2002
50%
50%
2003
50%
50%
2004
45%
55%
2005
35%
65%
2006
21%
79%
2007
52%
48%
2008
21%
79%
2009
59%
41%
2010
69%
31%
2011
69%
31%
2012
28%
72%
2013
19%
81%
2014
36%
64%
2015
100%
0%
2016
0%
100%
2017
18%
82%
2018
68%
32%
2019
2020
57%
43%