2023
37%
19%
1%
44%
2022
48%
12%
0%
40%
2021
49%
9%
14%
28%
2019
42%
6%
23%
29%
2018
48%
9%
7%
36%
2016
39%
4%
22%
35%
2015
43%
4%
24%
30%
2014
43%
2%
17%
38%
2012
44%
7%
0%
49%
2011
49%
8%
0%
43%
2010
47%
10%
0%
43%
2008
50%
4%
0%
47%