Year	annual %
1961	0.8472596895423408
1962	1.1606196007122804
1963	1.1237450507927065
1964	1.0313169411715535
1965	0.9288920438168304
1966	0.7912133571396254
1967	0.7103327849789878
1968	0.6578248722290567
1969	0.6896973158007569
1970	0.7761975870681113
1971	0.847076348403391
1972	0.8913759570301494
1973	1.035187675209798
1974	0.703877552521547
1975	0.6925405029762004
1976	0.8208613020308491
1977	0.9549407642763867
1978	0.9177823966393959
1979	0.992994484568996
1980	1.049186026736109
1981	0.8696675126332707
1982	0.7669336960804003
1983	1.0132636313901884
1984	1.0188177756574248
1985	1.0962771421402664
1986	1.1197671702621648
1987	1.1488098873123391
1988	1.2171069232245912
1989	1.2350507812411138
1990	1.278702150713201
1991	1.4908924815203903
1992	0.49413438311090374
1993	0.27638659201724636
1994	0.46744403209883956
1995	0.440395735947547
1996	0.8710988061469038
1997	0.8893211711293816
1998	0.9429620238017549
1999	1.05791260445136
2000	0.9971188173845746
2001	0.8644397721914174
2002	0.9030301057505739
2003	0.8358121324016423
2004	0.889549888316381
2005	0.9589610416378775
2006	1.0307112899252218
2007	1.070967792078605
2008	0.986681605435777
2009	0.9129636729626327
2010	0.8423191271015043
2011	0.7318527292764117
2012	0.7577348774767501
2013	0.7494744757890146
2014	0.7832134876929047
2015	0.7908135944570773
2016	0.7108232287140339
2017	0.6815574624310159
2018	0.6031802304659948
2019	0.48844321393022483
2020	0.3676351737873489
2021	0.3099055106780497
2022	0.44152140517621774
2023	0.25268802445708616