1990
5.974
6.434
11.803
0.002
1991
6.142
6.612
12.152
0.002
1992
6.455
7.069
12.834
0.007
1993
6.811
7.631
13.196
0.017
1994
6.94
7.743
13.518
0.047
1995
6.994
7.905
13.227
0.084
1996
6.974
8.0
12.861
0.117
1997
7.344
8.592
13.325
0.157
1998
7.475
8.774
13.767
0.143
1999
7.45
8.907
13.595
0.155
2000
7.684
9.069
14.002
0.247
2001
7.774
8.859
14.712
0.286
2002
7.597
9.181
13.214
0.378
2003
7.635
9.195
13.1
0.485
2004
8.027
9.483
14.159
0.66
2005
8.197
9.763
14.031
1.04
2006
9.0
10.309
14.681
1.823
2007
9.7
11.474
15.624
2.214
2008
10.4
11.702
16.835
3.205
2009
11.6
12.791
18.783
4.12
2010
12.5
13.558
20.527
4.639
2011
13.0
14.294
21.033
4.92