Year	annual %
1971	1.1525457236645593
1972	1.3286749355060579
1973	1.3232622038516126
1974	1.3612918696229457
1975	1.4261643812784683
1976	-4.240044230156357
1977	-4.579915859214921
1978	-4.105479109237081
1979	-3.3932362340467535
1980	-3.4404510234992642
1981	-3.5243615746963
1982	-2.5760691086200325
1983	-4.802104729073491
1984	-6.321324779701541
1985	-5.014564041401499
1986	-5.255730875196633
1987	-5.390844381427911
1988	-5.649732570566215
1989	-5.782580612511794
1990	-5.773353549584755
1991	-21.480717392346378
1992	-18.136993361275785
1993	-16.913066067155697
1994	-4.315267667500422
1995	-8.298320596126274
1996	-12.106573893434458
1997	-9.111798203024918
1998	-11.907044897929055
1999	-6.622181536927258
2000	-6.802337032843681
2001	-6.635056806655129
2002	-9.86698507144503
2003	0.35253879888725237
2004	-4.231512704396479
2005	-7.691299043362392
2006	-8.297334948265558
2007	-4.400415872936961
2008	76.02122091708105
2009	-5.463261561180147
2010	-0.07811737135044439
2011	14.2373763664758
2012	22.441912421805327
2013	1.6895493956529606
2014	13.236736836389767
2015	1.1534831829863776
2016	1.8378078398590105
2017	-8.313291646624734
2018	-2.859778597786061
2019	6.68599817956877
2020	0.06540899805239064
2021	6.06387309400364
2022	0.8921817392937896
2023	-0.17831558994019758