data["LV2"].value_counts()
Out[2]: 
ANG    33
ITA    33
ALL    23
ESP    20
Name: LV2, dtype: int64

data["LV2"].value_counts(normalize=True)
Out[3]: 
ANG    0.302752
ITA    0.302752
ALL    0.211009
ESP    0.183486
Name: LV2, dtype: float64