| | - | 10 20 | | | 74 | | 48 3 | | | 1973 | | | | | | 1986 | 1 2007 | 2 | | 3 | | | | | | | | | 60 | 10 | | | | | 3 1 | 2 | | | | 9 | | | | | 50% | 40% 30% | | | | | | | | | |