1990
100
100
100
1991
93.73
77.97
95.14
1992
88.88
63.76
88.77
1993
80.99
56.89
76.82
1994
78.7
51.46
73.74
1995
81.65
47.62
72.31
1996
77.21
41.53
67.03
1997
75.86
37.37
62.24
1998
69.58
33.92
58.96
1999
65.89
29.03
55.9
2000
64.28
21.11
54.67
2001
60.77
17.1
51.17
2002
57.53
13.73
49.58
2003
54.96
13.27
47.83
2004
53.72
12.78
47.22
2005
51.16
12.23
45.46
2006
49.15
12.02
44.86
2007
45.15
11.35
43.39
2008
43.83
11.29
41.65
2009
36.15
7.52
29.78
2010
37.37
8.24
30.33
2011
35.24
7.97
29.37
2012
34.01
7.96
28.2
2013
33.3
7.68
27.46
2014
33.75
8.29
26.62