probability to find winning chances

YEAR	WINNER	MATCHES	WINNING CHANCES
1975	WEST INDES	15	16
1979	WEST INDES	15	52
1983	INDIA	27	37
1987-1988	AUSTRALIA	27	64
1991-1992	PAKISTAN	39	26
1995-1996	SRI LANKA	38	31
1999	AUSTRALIA	42	66
2002-2003	AUSTRALIA	54	70
2006	AUSTRALIA	51	72
2007	INDIA	49	46
2010-211	AUSTRALIA	53	68
2014-2015	SRI LANKA	49	49
		CHANCES TO WIN
COUNTRY	1975-85	1986-195	1996-2005	2006-2010
INDIA	12.35	46	37	72
AUSTRALIA	25	45	15	51
WEST INDES	12	19	25	42
PAKISTAN	9	21	28	19
SRI LANKA	7	16	17	28