Year	annual %
1961	0.20763934011631988
1962	0.19485044439037086
1963	0.18213535527249958
1964	0.20950804101749843
1965	-0.16325528429954334
1966	-0.5378517494430778
1967	-0.5625762735645059
1968	-0.9835323284826426
1969	-1.2543321150367932
1970	-0.6299082363819418
1971	-0.07059201319939795
1972	-0.16062196263855028
1973	-0.1705414297984029
1974	-0.15470399836700177
1975	0.6558454628710446
1976	0.42208996890569017
1977	0.3026781339995983
1978	0.9624591486512811
1979	0.9251920286082386
1980	0.969282806921583
1981	0.6471517192876584
1982	2.058230044493103
1983	1.330184463887341
1984	-0.06831920183750453
1985	1.679523258579498
1986	0.8901359061851246
1987	-0.5168270265475741
1988	-0.37915290266465473
1989	-0.23111251419162382
1990	-0.21990596890280406
1991	1.4801272485695678
1992	-0.17368151184690936
1993	-0.20301042325062735
1994	-0.2790861745196411
1995	-0.5195423378986168
1996	-1.974176060124586
1997	-2.833462348744864
1998	-2.9508754365981806
1999	-3.0308268689125444
2000	-2.997842281876061
2001	-2.8897638976456714
2002	-2.908109594163489
2003	-3.0025558838237822
2004	-3.004749589098861
2005	-3.0393743995387648
2006	-1.8483360753992772
2007	-0.8330226133942862
2008	-0.5297175194051514
2009	-0.4395434219348249
2010	-0.6975452081087549
2011	-0.7475372324395984
2012	-0.3038767121535913
2013	0.2259423781365772
2014	0.8010505479787782
2015	1.1936937418112545
2016	1.100077097825017
2017	1.5357282537463983
2018	2.273661473096715
2019	2.6976587698202077
2020	0.964542275328099
2021	-0.6444705442642095
2022	1.1379713432782357
2023	2.7788119423613757