1992
10.3
1
22.2
19.7
1993
11.3
0.9
19
19.8
1994
10.1
0.9
16.4
20.3
1995
12.2
0.9
19.4
20.8
1996
16.6
1
17.9
20.8
1997
12.9
1.1
25.6
21
1998
13.2
1.2
28.8
21
1999
10.6
1.2
22.2
21.6
2000
10.9
1.2
24.7
20.8
2001
10.2
1.2
22.8
20.7
2002
9.1
1.2
18.7
20.6
2003
9.1
1.5
22.4
21
2004
9.6
1.6
20.4
21.3
2005
10.3
1.3
22
21.5
2006
10.5
1
22.5
21.3
2007
10.6
1.1
22
21.5
2008
13.2
1.2
21.4
20.8
2009
11.8
1.2
24.2
20.5
2010
11.3
1
21.1
20.9
2011
10.1
1.2
22.4
20.1
2012
10.8
1
26.3
19.7