Year	annual %
1961	11.156835848193873
1962	-5.470999588646648
1963	31.24456048738033
1964	2.287798408488064
1965	-9.043760129659644
1966	10.940841054882394
1967	4.079665917121748
1968	5.37037037037037
1969	26.420620972466313
1970	13.276181649675625
1971	15.729187973000613
1972	25.980911983032872
1973	29.25084175084175
1974	77.3906436557039
1975	22.908890656550206
1976	6.6361328222233285
1977	13.804855275443511
1978	21.676170160397096
1979	8.502747715855838
1980	22.38448870521704
1981	3.922614060476807
1982	23.324049643310858
1983	10.06359080013471
1984	14.145322989974622
1985	31.11892522627645
1986	28.745805924019578
1987	29.381818861156777
1988	28.487990123528096
1989	15.423385963926506
1990	21.037002419445134
1991	21.730824146432695
1992	15.794464470384554
1993	16.9713553629871
1994	12.24624706668683
1995	18.58180719723394
1996	7.544538378786518
1997	16.399747793190418
1998	11.211216633458115
1999	15.134485464090696
2000	9.236990954753185
2001	11.14141868765635
2002	12.638510350958812
2003	25.05038247846299
2004	18.85268729731323
2005	6.569608966088282
2006	9.544663817934788
2007	15.322479447035468
2008	14.622886496471082
2009	2.374241505584421
2010	6.90990143436713
2011	6.430134669284758
2012	8.161982025303127
2013	5.784301960415443
2014	8.738251142344849
2015	10.172650132630078
2016	9.084579204711748
2017	9.270616174818873
2018	6.284405884751425
2019	8.48462028173344
2020	16.881064690594393
2021	8.848106549872613
2022	5.256627053526032
2023	7.265656412465023