ALP1	ALP2	ALP3	ALP4	ALP5	LIB1	LIB2	LIB3	LIB4	LIB5
1984	61.4					38.6				
1987	56.8					43.2				
1990	57.9	57.6				42.1	42.4			
1993		60.5					39.5			
1996		51.4					48.6			
1998		57.1	56.6				42.9	43.4		
2001			52.3					47.7		
2004			51.1	53.2				48.9	46.8	
2007				61.1	60.4				38.9	39.6
2010					51.5					48.5