Year	annual %
1961	6.951215392943631
1962	6.9322077551644545
1963	6.764034687040948
1964	6.528512395437359
1965	6.220223829016719
1966	6.088173838171187
1967	5.864538323710474
1968	5.751359607622674
1969	5.6601682547059085
1970	5.32752064222781
1971	5.132191946052931
1972	5.038913172106629
1973	4.8732074661074645
1974	4.688743850161595
1975	4.375534992463887
1976	15.25020152778647
1977	13.86294780784008
1978	-6.3601453024487355
1979	-7.432010187899873
1980	3.83576874828665
1981	3.7723721202226863
1982	2.9838473525766163
1983	2.69474601918508
1984	3.23499250734678
1985	3.3328933631617303
1986	3.778155889867795
1987	3.6994501400766793
1988	3.1002668711802888
1989	2.397443812551134
1990	2.346364831303109
1991	2.4345015156374714
1992	2.5365467576701524
1993	2.344125042470338
1994	2.1957774694640912
1995	2.210756113028593
1996	2.245449467813991
1997	2.1724637766749058
1998	2.082586651743995
1999	1.824338952821657
2000	1.7818296897560335
2001	1.711409294082907
2002	1.4423412831921132
2003	1.4450455951584567
2004	1.689816645041851
2005	1.6344404585036179
2006	1.7966825792201029
2007	2.0436391557468863
2008	1.770976438073129
2009	1.4577282900678281
2010	1.0665350830574623
2011	1.1527306182169614
2012	2.7811022915364423
2013	9.402072012171224
2014	10.150659551483079
2015	2.1469913907268503
2016	-2.035837292132853
2017	-2.2310370147721788
2018	-2.4419125506658466
2019	-2.6937983302729487
2020	-1.8913668583728327
2021	-1.0602793552145355
2022	-1.6674044850095742
2023	-2.3147116305547275