year	geo	efficiency_rate
1990	EU15	78.0
1991	EU15	78.0
1992	EU15	86.3
1993	EU15	87.0
1994	EU15	87.0
1995	EU15	94.8
1996	EU15	88.6
1997	EU15	84.9
1998	EU15	88.2
1999	EU15	85.1
2000	EU15	86.4
2001	EU15	85.6
2002	EU15	84.6
2003	EU15	75.9
2004	EU15	76.8
2005	EU15	82.1
2006	EU15	79.9
2007	EU15	79.6
2008	EU15	79.2
2009	EU15	78.7
2010	EU15	78.8
2011	EU15	75.7
2012	EU15	77.2