Year	% change from 1990
1991	6.94851164659103
1992	5.84629177897966
1993	7.78554669988996
1994	11.3537524670047
1995	12.5687704855997
1996	17.0969976770858
1997	19.7024166458051
1998	16.6041789167884
1999	3.77167907688905
2000	4.35444526597075
2001	10.0049776732434
2002	11.8266314251282
2003	9.76948424318989
2004	8.14184331099685
2005	9.46471091653227
2006	13.1200987384072
2007	13.83371078263
2008	13.5957430705549
2009	0.687559309995511
2010	0.823790367183452
2011	1.83202827085529
2012	2.84026617452713