elmo.2008 elmo.2012 
0.0013199 NaN 
0.001333 0.00122028 
0.00133968 0.00120303 
0.00134165 0.00117624 
0.00135324 0.0011524 
0.00133239 0.00111893 
0.0012767 0.00111778 
0.00120853 0.00110193 
0.00118299 0.00111806 
0.00121483 0.00112331 
0.00127105 0.00113215 
0.00131057 0.00112885 
0.00120019 0.00106106 
0.00120261 0.00104598 
0.00126699 0.00105656 
0.00135599 0.00112028 
0.00125829 0.00115998 
0.00116068 0.00118875 
0.00116536 0.00122672 
0.00119352 0.00125845 
0.00122741 0.00120828 
0.00129086 0.0011121 
0.00128371 0.00104766 
0.0012532 0.00101292 
0.00123506 0.000979889 
0.0012163 0.000945339 
0.00117003 0.00102858 
0.00116089 0.00106295 
0.00117595 NaN 
0.00113725 NaN 
0.00113316 NaN 
