elmo.2005 elmo.2008 elmo.2012 
NaN 0.497807 NaN 
NaN 0.51026 0.462494 
NaN 0.517359 0.463023 
NaN 0.516878 0.471998 
NaN 0.511473 0.499016 
NaN 0.540496 0.506324 
NaN 0.536992 0.496021 
0.453598 0.53153 0.511452 
0.40401 0.551516 0.509623 
0.37297 0.589198 0.540664 
0.441128 0.634722 0.519356 
0.523776 0.52628 0.508017 
0.477134 0.516903 0.519919 
0.402612 0.507276 0.51099 
0.401537 0.472693 0.468217 
0.314762 0.470421 0.405413 
0.358854 0.500276 0.389256 
0.378784 0.474514 0.389877 
0.398291 0.511237 0.388499 
0.46128 0.533474 0.406098 
0.517104 0.527102 0.431095 
0.564252 0.507697 0.431894 
0.577327 0.515129 0.419342 
0.42135 0.535307 0.405279 
0.3291 0.489043 0.316571 
0.311468 0.479927 0.274864 
0.311194 0.396767 NaN 
0.300973 0.34582 NaN 
NaN 0.324379 NaN