4.253391 0.235107 9.6843% 1980 0.298478 3.350326 9.0330% 1979 3.288684 0.304073 8.8650% 1978 0.614989 1.626045 7.2813% 1977 1.874656 0.533431 6.6558% 1976 1.802873 0.554670 6.4073% 1975 8.235712 0.121422 9.8159% 1974 6.428807 0.155550 9.0909% 1973
infiltration