Year	annual %
1981	11.8146975500212
1982	9.82116244432078
1983	13.5025105170179
1984	20.0263032042325
1985	10.5189759937166
1986	14.0468679587644
1987	25.1550954282911
1988	33.9121649354339
1989	12.4463620502664
1990	11.8235380454151
1991	12.6153153828849
1992	23.7513530230399
1993	22.7727102336625
1994	34.6496361508324
1995	83.3257747543458
1996	37.6020450235016
1997	9.13735243003495
1998	29.7486512828264
1999	44.8041642861674
2000	29.5814884631684
2001	22.7
2002	14.7446346101603
2003	9.57679786919214
2004	11.4298060822124
2005	15.4103446604296
2006	13.9742943548388
2007	7.9522099086403
2008	8.71260186609043
2009	8.42204427696655
2010	7.41159092883827
2011	7.6228226284852
2012	21.2712650013779
2013	27.2833333333334
2014	23.7920649469687
2015	21.8673475542553
2016	21.7111132136499
2017	11.5433939188771
2018	12.420178108921
2019	9.3708360560567
2020	8.62551469650552
2021	9.33014410835212
2022	20.953969729969
2023	28.7897428247298