LIB1	LIB2	LIB3	LIB4	ALP1	ALP2	ALP3	ALP4
1984	50.7				49.3			
1987	51.5	48.1			48.5	51.9		
1990		52.4				47.6		
1993		51.3	50.6			48.7	49.4	
1996			52.5				47.5	
1998			51.9				48.1	
2001			51.7	51.6			48.3	48.4
2004				55				45
2007				48.6				51.4
2010				47.6				52.4