Year	annual %
1961	-0.9479993245707163
1962	-4.635720864132622
1963	18.53473508520149
1964	-5.377452177431863
1965	-5.045227768259252
1966	3.6334666642480897
1967	1.647355790028243
1968	7.773042290451173
1969	4.590911163203714
1970	7.344036454400424
1971	6.8124604333055885
1972	9.893303210218065
1973	22.774134366819695
1974	31.421394146828106
1975	29.360728486970345
1976	3.020982565002413
1977	9.75033574482947
1978	6.717506170892619
1979	12.378333452445034
1980	44.67810204657454
1981	12.200289032481649
1982	9.845767083930255
1983	5.66428865895918
1984	5.183243101340437
1985	3.5143272425248995
1986	4.473495157340551
1987	7.337770192382791
1988	2.7573551147413298
1989	6.823577750621084
1990	3.7283083547378055
1991	4.495282918779125
1992	2.122393589771775
1993	5.195366413144129
1994	2.2098426558684565
1995	1.0161492085313313
1996	2.538416419595066
1997	0.9168984978937402
1998	8.703256153540707
1999	4.433423515799291
2000	-1.3228391507238513
2001	2.2553892518749876
2002	0.9078562366999563
2003	1.1158721672058505
2004	5.8281441360243775
2005	6.667724557185025
2006	4.096370735693625
2007	8.612261083025132
2008	1.806934873994905
2009	-1.8297044154943194
2010	3.8240307367741337
2011	3.6134739023688525
2012	-0.6029488664372167
2013	2.882224330901167
2014	0.4502864936154083
2015	-1.8109976553294018
2016	-0.23463982327855604
2017	2.6120825419002216
2018	3.328710242740442
2019	4.260278527621935
2020	1.8243823411183513
2021	4.701754514264891
2022	4.075806483439706
2023	4.735828043271326