Year	annual %
1990	41.7406571272428
1991	21.4496164274258
1992	28.244062356827
1993	31.6458241526824
1994	62.8906845843899
1995	51.7599018327265
1996	115.524717933329
1997	33.947459925683
1998	18.8902867025716
1999	26.1927100615555
2000	29.4528251104893
2001	7.99690405620458
2002	33.0228760786371
2003	34.9337557387369
2004	33.9537243385346
2005	29.6040593512977
2006	17.9043155490636
2007	15.4484777579669
2008	30.1324528534352
2009	7.83166636002666
2010	45.9432686985893
2011	28.1491909528854
2012	14.0594300642861
2013	35.5026746348335
2014	40.4404901065548