[neneu10]

Well, I'll only do it countries who had at least 5 finished main seasons, and with only single winners (without pairs)...

USA - 15 seasons - Female Winners Index: 33.3% (5)
Brazil - 14 seasons - Female Winners Index: 35.7% (5)
Spain - 14 seasons - Female Winners Index: 42.8% (6)
UK - 14 seasons - Female Winners Index: 35.7% (5)
Italy - 13 seasons - Female Winners Index: 30.7% (4)
Germany - 11 seasons - Female Winners Index: 27.2% (3)
Australia - 10 seasons - Female Winners Index: 30% (3)
Finland - 8 seasons - Female Winners Index: 50% (4)
Portugal - 8 seasons - Female Winners Index: 12.5% (1)
Argentina - 7 seasons - Female Winners Index: 28.5% (2)
France - 7 seasons - Female Winners Index: 71.4% (5)
Netherlands - 7 seasons - Female Winners Index: 57.1% (4)
Albania - 6 seasons - Female Winners Index: 16.6% (1)
Belgium - 6 seasons - Female Winners Index: 50% (3)
Denmark - 6 seasons - Female Winners Index: 33.3% (2)
Sweden - 6 seasons - Female Winners Index: 66.6% (4)
Croatia - 5 seasons - Female Winners Index: 0% (0)
Israel - 5 seasons - Female Winners Index: 40% (2)
Poland - 5 seasons - Female Winners Index: 40% (2)