Year	annual %
1961	2.29427721852365
1962	4.39118880101066
1963	4.82374254948321
1964	3.68024442937389
1965	5.15297796489268
1966	7.84451542013001
1967	5.68252605087703
1968	4.95783166042143
1969	3.45502284108181
1970	8.25807897763062
1971	1.68449749585047
1972	1.02843542457254
1973	7.13635519367244
1974	2.1346487062448
1975	2.3477815396374
1976	6.37316996704662
1977	7.24831067143043
1978	7.30309713178573
1979	2.68205762558182
1980	3.41492508400083
1981	2.96492043711025
1982	3.44305107614275
1983	4.54605986850338
1984	3.35185374848427
1985	2.23597406061546
1986	3.30470116364945
1987	7.82473453844752
1988	11.4839439910716
1989	10.8066886974015
1990	9.6471501452065
1991	7.02373984551666
1992	6.0952068995573
1993	7.88138707879502
1994	6.8840768317645
1995	6.84550299899051
1996	3.80347218491272
1997	-4.32789558192012
1998	-9.58003809073068
1999	4.41933966051604
2000	4.60153238773069
2001	1.67698998261363
2002	4.46242464161249
2003	5.75578269271062
2004	5.27112396054035
2005	3.3875547879741
2006	5.16129059344061
2007	5.18493806687917
2008	0.989818341981191
2009	-1.08407064004228
2010	6.22440587979412
2011	2.24734713763324
2012	4.43611982905733
2013	0.308181839026545
2014	1.89116109319411
2015	2.58307937264803
2016	3.45920197767136
2017	3.89190096493746
2018	3.7313712836098