LIB1	LIB2	ALP1	ALP2
1984	65.4		34.6	
1987	63.1	61.5	36.9	38.5
1990		62.7		37.3
1993	59.5	59.3	40.5	40.7
1996	62.3		37.7	
1998	57.4		42.6	
2001	59.6	59.2	40.4	40.8
2004		62.4		37.6
2007		57.5		42.5
2010		57.3		42.7