1995
48
84
77
52.0
16.4
23
1996
48
84
77
51.9
16.3
23
1997
50
83
77
50.0
16.9
23
1998
54
84
78
45.8
16.3
22
1999
57
84
79
43.0
15.9
21
2000
56
84
79
43.5
16.2
21
2001
60
84
80
40.1
15.5
20
2002
62
85
81
38.1
15.1
19
2003
63
85
81
37.1
15.2
19
2004
65
85
81
35.5
15.3
19
2005
68
85
81
32.4
15.0
19
2006
70
84
81
30.4
15.8
19
2007
72
84
81
28.4
16.1
19
2008
73
84
81
26.7
16.4
19
2009
76
85
82
24.2
15.4
18
2010
76
84
82
24.3
16.1
18
2011
74
83
80
25.7
17.2
20