year	geo	efficiency_rate
1990	EU15	41.4
1991	EU15	41.9
1992	EU15	41.9
1993	EU15	42.9
1994	EU15	43.4
1995	EU15	43.5
1996	EU15	44.3
1997	EU15	44.5
1998	EU15	45.3
1999	EU15	45.5
2000	EU15	45.6
2001	EU15	45.6
2002	EU15	46.2
2003	EU15	46.8
2004	EU15	47.7
2005	EU15	47.8
2006	EU15	47.6
2007	EU15	47.7
2008	EU15	48.6
2009	EU15	48.9
2010	EU15	49.7
2011	EU15	49.2
2012	EU15	47.8