year,   wc, simpson, shannon, collision, berger_parker, brillouin
2014, 2723,   0.996,   6.675 ,    5.327    ,     0.057,     6.095
2015, 4285,   0.998  , 7.023 ,    6.078     ,    0.029,     6.493
2016, 4976 ,  0.998   ,7.077 ,    5.999    ,     0.033 ,    6.564
2017, 4194  , 0.997  , 6.942 ,    5.815   ,      0.040 ,    6.423
2018, 2756   ,0.997 ,  6.681  ,   5.830  ,       0.029 ,    6.121
2019, 4130   ,0.998,   6.903   ,  5.916 ,        0.032 ,    6.390