elmo.2008 elmo.2012 
0.409064 NaN 
0.419243 NaN 
0.436054 NaN 
0.439087 NaN 
0.44617 NaN 
0.451204 NaN 
0.455317 0.42334 
0.435391 0.434333 
0.397958 0.436582 
0.369004 0.438772 
0.375031 0.441833 
0.395696 0.445546 
0.409258 0.438877 
0.431752 0.428779 
0.431844 0.416752 
0.423036 0.417983 
0.435334 0.412718 
0.461426 0.429876 
0.498675 0.458157 
0.543479 0.46895 
0.572139 0.464959 
0.611876 0.495612 
0.64213 0.510549 
0.620902 0.528211 
0.583698 0.531727 
0.562695 0.507526 
0.546909 0.504617 
0.550763 0.509329 
0.557127 0.508703 
0.539796 0.506986 
0.489606 0.475577 
0.401811 0.42295 
0.366613 0.405318 
0.389553 0.416667 
0.409079 0.437408 
0.41825 0.448274 
0.417522 0.437229 
0.422489 0.4319 
0.418671 0.434335 
0.423251 0.444735 
0.45313 0.459919 
0.472861 0.473812 
0.470043 0.488967 
0.456137 0.489983 
0.445587 0.485064 
0.454472 0.474696 
0.450082 0.46164 
0.450137 0.457329 
NaN 0.454041 
