1907,20.5,16.8,9.6,5.7,5.1,3,6,4,1,4.4,5.8,12.3
1915,23.5,13.8,5.6,5.7,5.1,3,5,7,2,3.4,2.8,10.3
1950,19.5,16.8,3.6,3.7,4.1,1,1,7,2,5.4,6.8,17.3
1957,21.5,18.8,5.6,1.7,7.1,1,2,6,2,11.4,1.8,11.3
1965,20.5,11.8,6.6,1.7,4.1,3,1,7,2,3.4,6.8,16.3
1966,22.5,10.8,2.6,2.7,6.1,1,1,4,1,5.4,7.8,16.3
1976,25.5,9.8,10.6,5.7,6.1,1,5,1,1,6.4,10.8,15.3
2007,25.5,7.8,3.6,6.7,4.1,2,4,4,2,5.4,6.8,11.3
