Year	% change from 1990
1991	5.69771298670831
1992	11.2918753185396
1993	12.457629175397
1994	11.4172686896797
1995	13.518214398395
1996	11.7902128451352
1997	10.0840540081384
1998	9.84216615026172
1999	10.9472457952771
2000	11.3363697405571
2001	2.81366545048582
2002	2.57420456108277
2003	5.73573549279596
2004	6.70247793481165
2005	5.43964533900705
2006	6.37321921188245
2007	6.9791523408111
2008	7.42975948742428
2009	5.56746567862085
2010	4.41141969565817
2011	5.45553389261475
2012	6.49964808957133