year	geo	efficiency_rate
1990	EU15	40.1
1991	EU15	38.0
1992	EU15	40.7
1993	EU15	41.2
1994	EU15	42.6
1995	EU15	42.6
1996	EU15	45.6
1997	EU15	47.4
1998	EU15	47.5
1999	EU15	48.4
2000	EU15	54.3
2001	EU15	55.2
2002	EU15	54.8
2003	EU15	55.7
2004	EU15	57.6
2005	EU15	59.5
2006	EU15	56.6
2007	EU15	55.5
2008	EU15	57.2
2009	EU15	57.0
2010	EU15	57.5
2011	EU15	56.0
2012	EU15	54.5