Year	annual %
1996	21.04285043876323
1997	28.07153295920607
1998	20.524277573876915
1999	36.08917196842374
2000	17.264273366453565
2001	32.37068314628873
2002	20.757954298838612
2003	15.061958333035347
2004	11.693381827311246
2005	10.665976686186506
2006	5.762414972681251
2007	12.1136853670277
2008	15.875759100218293
2009	15.72140247729582
2010	15.590631335810176
2011	14.624150765379564
2012	14.399384145221724
2013	16.46712371252259
2014	12.906459473341888