LIB1	LIB2	ALP1	ALP2
1984	54.4		45.6	
1987	53.7		46.3	
1990	54.3	54.5	45.7	45.5
1993		49.97		50.03
1996		54.6		45.4
1998	49.8	49.94	50.2	50.06
2001	47.9		52.1	
2004	52.6		47.4	
2007	49.0		51	
2010	43.3		56.7