Year	annual %
1961	2.79949245650161
1962	2.97865062603954
1963	3.03343963252032
1964	3.06137824326201
1965	3.09150051024929
1966	3.09221107092551
1967	3.08929582395733
1968	3.0868066719664
1969	3.05802222356712
1970	3.01386109736621
1971	2.92152362199403
1972	2.85517679409004
1973	2.84541446569948
1974	2.80855343866057
1975	2.75682890221497
1976	2.68810418678396
1977	2.6809957092095
1978	2.697162875456
1979	2.66104293845816
1980	2.63607966695133
1981	2.57656501609284
1982	2.57905498141366
1983	2.68036798668495
1984	2.79449944833296
1985	2.96094891488538
1986	3.27832628041109
1987	3.49767636658567
1988	3.46780704688293
1989	3.35237408677025
1990	3.0783936947649
1991	2.55839629290863
1992	2.05590495450165
1993	1.81454621703216
1994	1.7310430672935
1995	1.64603954100981
1996	1.52408280185649
1997	1.38627725951906
1998	1.24455268099471
1999	1.1115545448798
2000	0.962864025570883
2001	0.885660412204392
2002	0.910100943022538
2003	0.924209372808693
2004	0.935290168887955
2005	0.945094240817718
2006	0.963593457802097
2007	1.01387721267549
2008	1.13308133870917
2009	1.18929507013328
2010	1.19303600363508
2011	1.26340561811428
2012	1.32915852455183
2013	1.36162110707575
2014	1.57629422132566
2015	2.07401685853513
2016	0.97200398206436
2017	0.387278487857363
2018	1.22553003994341
2019	1.29507386292128
2020	1.22317929511453
2021	0.998920418563044
2022	0.841058243677696
2023	0.865464649421926