Year	annual %
1961	2.1173721388741455
1962	2.226651024924024
1963	-1.0054489174493142
1964	4.008071592561777
1965	-0.4247541296264785
1970	5.509817491357211
1971	3.6019985237756345
1972	-0.8342285104001519
1973	-2.76704968539903
1974	1.5370133932951973
1975	1.4699685615776872
1976	-3.0689423901473276
1977	2.9050542973731552
1978	-2.639561782534699
1979	9.496393292744813
1980	0.3903609200529985
1981	-10.762385042291072
1982	-2.027119751229378
1983	0.3603496221570026
1984	0.43838882563728987
1985	1.4829927747422147
1986	1.8367601648180596
1987	-0.7317228812706134
1988	3.2734108233620702
1989	4.080786935381013
1990	4.888761172252828
1991	-7.01962815147175
1992	2.20487096382746
1993	2.3242999233326316
1994	-0.713331509812889
1995	1.7461413519470455
1996	3.168727989753208
1997	3.960393621236321
1998	4.152819997722659
1999	5.058985721983333
2000	4.808130504804325
2001	6.178200497926696
2002	-12.37149579385239
2003	9.826853885610916
2004	5.6219608704498825
2005	4.065609132674979
2006	5.158585996146755
2007	7.151640319999487
2008	6.782294005126289
2009	-4.520441696409421
2010	0.29233103663905524
2011	1.4990308585507819
2012	1.4749918538071682
2013	2.0578922267364845
2014	4.109688159142451
2015	1.913493556557583
2016	3.6286815715563563
2017	5.057821736198392
2018	2.8882622573839285
2019	4.358546166617899
2020	-6.25510367605402
2021	6.793302969059596
2022	3.1965721302074996
2023	4.322732234742261