LIB1	LIB2	ALP1	ALP2
1984	62.1		37.9	
1987	62.6	57.8	37.4	42.2
1990		61.8		38.2
1993	59.3	60.1	40.7	39.9
1996	60.7		39.3	
1998	59.6		40.4	
2001	58.4		41.6	
2004	58.8		41.2	
2007	57		43	
2010	56.8		43.2