Year	annual %
1961	0.9091443793141707
1962	0.8421738493765645
1963	0.8929389125398757
1964	0.9332681699457481
1965	0.7656516001370193
1966	0.7390409663403688
1967	0.9328842234820058
1968	0.8663681675195107
1969	0.7382287581113189
1970	0.5353777935621622
1971	0.5050812356556094
1972	0.7245457225593839
1973	0.7528301841858536
1974	0.8181327999613899
1975	0.9031349407821807
1976	0.890036863590808
1977	0.8102214857475616
1978	0.6810688416221637
1979	0.5878881087679559
1980	0.5594221259105296
1981	0.551969904332708
1982	0.5609926358958575
1983	0.5267381401606457
1984	0.4988428346911462
1985	0.45959284854299653
1986	0.4443832277047193
1987	0.43001373668522547
1988	0.3538781968681235
1989	0.10380647221157346
1990	-0.05280788262700753
1991	-0.24711330169398593
1992	-0.32408321477643653
1993	-0.06314511113440346
1994	-0.018474776940465176
1995	-0.14301556110885372
1996	-0.21667831771220847
1997	-0.18625201929384616
1998	-0.16785744930500357
1999	-0.16238712525290566
2000	-0.5621874689136064
2001	-0.7264166038038695
2002	-0.6504641773264837
2003	-0.3137479256098885
2004	-0.27428209591545283
2005	-0.27254803261145355
2006	-0.25407878588683275
2007	-0.3722452156530238
2008	-0.3576290354104401
2009	-0.19181370299806133
2010	-0.3616662996995075
2011	-0.23693312734882
2012	-0.22915498389339461
2013	-0.21320183000739235
2014	-0.2097571926014865
2015	-0.23024328270129502
2016	-0.25529091308338536
2017	-0.24680982762946257
2018	-0.1962496076750142
2019	-0.13645027658941444
2020	-0.21329699270997082
2021	-0.7506029254769686
2022	-1.286711742934898
2023	0.04829371625689305