1,up to and including 7.5 per cent.,the first 7.5 per cent.,9,
2,more than 7.5 per cent. but not more than 8.5 per cent.,the next 1 per cent. or if less than 1 per cent. that part thereof,8,
3,more than 8.5 per cent. but not more than 9.5 per cent.,the next 1 per cent. or if less than 1 per cent. that part thereof,6,
4,more than 9.5 per cent. but not more than 10.5 per cent.,the next 1 per cent. or if less than 1 per cent. that part thereof,5,
5,more than 10.5 per cent. but not more than 11.5 per cent.,the next 1 per cent. if less than 1 per cent. that part thereof,3,
6,more than 11.5 per cent.,nil,nil,