Year	annual %
1961	4.213827101048253
1962	3.4079867046119148
1963	5.291328845967172
1964	7.7591053727702075
1965	-0.5413381909331179
1966	1.2427771211191612
1967	6.108865421550803
1968	4.602206261694633
1969	5.777223047842341
1970	5.907181551962637
1971	0.6194586681687042
1972	-1.7581341048063592
1973	3.8817857982654544
1974	2.4796634389171857
1975	6.878111326609343
1976	2.6069464723635747
1977	6.224862684511876
1978	6.143296151817708
1979	-2.5248944984530226
1980	6.522766760763716
1981	6.444767612936403
1982	3.856381505894518
1983	6.669153679778589
1984	4.252148238503864
1985	5.476468441585865
1986	4.834419664186825
1987	4.26926519719315
1988	8.367930762486736
1989	5.382868474891822
1990	5.396915261114145
1991	2.107795412050578
1992	5.806666441747083
1993	4.286290178389862
1994	5.918223910996858
1995	6.823803684096845
1996	6.708154635804746
1997	3.6945765577109455
1998	5.4451638978128045
1999	7.512664933166064
2000	4.112449811914701
2001	4.359127669582691
2002	3.7210753505874976
2003	7.176071101115028
2004	7.54872298634541
2005	7.612733441677406
2006	7.618528801415849
2007	7.1391661263694175
2008	3.2981049942519007
2009	6.949900158846134
2010	7.365992008613915
2011	5.071221948494184
2012	5.381289736033509
2013	6.008601615364512
2014	6.847837891486506
2015	7.251561624209131
2016	7.7762355074678595
2017	6.50264099306672
2018	6.33469355433985
2019	3.9243228404806274
2020	-4.582693129447819
2021	8.763820550377972
2022	6.312211691706878
2023	6.352854940185452