77.4*
61.3
12
15
10
06
03
99
95
92
88
84
80
0
25
50
100
75
Per cent
77.4*
61.3
12
15
10
06
03
99
95
92
88
84
1980
0
25
50
100
75
Per cent
77.4*
67.8
58.8
56.0
62.5
59.2
63.6
54.9
59.4
64.4
61.3
12
15
10
06
03
99
95
92
88
84
1980
0
25
50
100
75
Per cent
77.4*
67.8
58.8
56.0
62.5
59.2
63.6
54.9
59.4
64.4
61.3
2012
2015
2010
2006
2003
1999
1995
1992
1988
1984
1980
0
25
50
100
75
Per cent