1995
53.5
19
27.6
62.2
27.1
10.7
1996
52
22.6
25.4
62.4
27.7
9.9
1997
58.3
21.5
20.2
61.8
27.1
11.1
1998
59.6
22.2
18.1
61.6
26.9
11.5
1999
60.5
20.7
18.7
56.8
32
11.2
2000
63
20.3
16.7
58.4
29.9
11.7
2001
60.1
20.7
19.1
56.9
30.6
12.5
2002
62.1
22
15.9
52.8
34.6
12.5
2003
70.7
20
9.2
50.1
35.6
14.3
2004
77.8
14.2
8.1
51.3
34.6
14.1
2005
78.1
13.3
8.6
52.7
33.2
14
2006
79.4
13
7.6
56
31.8
12.2
2007
74.7
16.9
8.4
54.2
32
13.7
2008
75.6
17.3
7.2
54.2
32.7
13.1
2009
80.5
12.6
6.9
52.6
33.2
14.2
2010
80.4
13
6.6
50.9
34
15.2
2011
80.2
13.3
6.5
49.2
36.5
14.3
2012
76.4
15.5
8.1
50
36
14
2013
69.4
20.7
9.8
50.5
36.4
13.1