Year	annual %
1961	2.0886327104222318
1962	1.9873267504086272
1963	1.9406980154806206
1964	1.8625739029456128
1965	1.807289032622549
1966	1.7226226196291066
1967	1.641921340322611
1968	1.5691999418308882
1969	1.5020036735333235
1970	1.3809592835221594
1971	1.1730466774183128
1972	0.4326267754489237
1973	-0.26985111662530414
1974	-0.3114681101714041
1975	-0.30772344762880266
1976	-0.28485874990363413
1977	-0.28391193754396227
1978	-0.3143514687391047
1979	-0.3879601443723004
1980	-0.3726955840095769
1981	0.41358610971438736
1982	0.33785193553922
1983	0.2950486356599953
1984	0.23305619994762594
1985	0.1671651487478556
1986	0.08764965834988914
1987	-0.019333284427005992
1988	-0.06313194040528458
1989	-0.059959695459809836
1990	-0.075453736375664
1991	0.2734008538990196
1992	0.7671011078058001
1993	0.8275800389422727
1994	0.8516824675188133
1995	0.9389268938416961
1996	0.9744246751856309
1997	0.9645824908167242
1998	0.9471100323694941
1999	0.9196403522429932
2000	0.8711608985050958
2001	0.8338930916774956
2002	0.9313587744425718
2003	0.9711050873939087
2004	0.9324089265431326
2005	0.9115632759738332
2006	0.8815099747331914
2007	0.8610573001291044
2008	0.84854405301067
2009	0.8202068302005188
2010	0.746292945204587
2011	0.5928055694648577
2012	0.5902755475624559
2013	0.7220530110019183
2014	0.7069870761849444
2015	0.6845236221711559
2016	0.634853547277018
2017	0.6059973483732932
2018	1.3925495204195357
2019	0.9303348230871791
2020	0.19823106682106584
2021	0.5040826478732754
2022	0.30524708595096683
2023	0.34147676153857276