LIB1	LIB2	ALP1	ALP2
1984	59.2		40.8	
1987	61.6		38.4	
1990	60.7	54.5	39.3	45.5
1993		57.8		42.2
1996		61.6		38.4
1998	57.6	57.5	42.4	42.5
2001	57.4		42.6	
2004	55.4		44.6	
2007	52.9		47.1	
2010	50.8		49.2