Year	Percent
1961	5.43249
1962	1.99125
1963	3.00326
1964	4.21939
1965	4.47037
1966	2.9612
1967	5.37092
1968	1.40388
1969	3.65664
1970	1.20535
1971	4.93397
1972	4.5281
1973	3.8043
1974	3.28034
1975	4.37441
1976	5.33038
1977	3.72145
1978	3.47353
1979	4.01766
1980	4.22927
1981	1.24929
1982	-0.13213
1983	3.62913
1984	5.75358
1985	5.23769
1986	3.67188
1987	1.27823
1988	-0.79046
1989	0.62205
1990	1.58224
1991	2.59464
1992	2.97831
1993	2.23496
1994	4.45898
1995	3.61466
1996	4.49697
1997	4.71536
1998	2.01518
1999	1.31715
2000	2.53761
2001	1.57003
2002	0.89214
2003	0.32965
2004	3.34652
2005	1.92815
2006	1.57372
2007	1.92493
2008	-0.76376
2009	-2.92306
2010	-0.55484
2011	-0.3294
2012	1.38126
2013	-0.17002
2014	0.83157
2015	0.9287
2016	0.23631
2017	0.99831