Year	annual %
1961	2.4273824566380995
1962	2.949645359144913
1963	2.5491556736289915
1964	2.061311544813869
1965	1.5561086973721159
1966	1.4434536720985558
1967	1.6330083978352556
1968	1.6502973645452663
1969	1.5095236071813465
1970	1.1050181876314507
1971	0.7263639684940363
1972	0.8354279775108145
1973	0.8111342210577275
1974	0.6113616426133084
1975	0.029066006510904536
1976	-0.4988428033993128
1977	-0.26633783677711786
1978	0.08163050744490626
1979	0.2733790154320881
1980	0.4682565504241189
1981	0.5323100935337095
1982	0.5036722441554509
1983	0.34812513995855787
1984	0.2783782711263187
1985	0.36198843845007195
1986	0.43952954995704974
1987	0.5471832997406018
1988	0.6525978768824383
1989	0.7274579033493733
1990	0.9457586402584107
1991	1.172688611434501
1992	1.0293882042463516
1993	0.8388868302428978
1994	0.7239156256846261
1995	0.5949691916426191
1996	0.3682937729058158
1997	0.16749073766257144
1998	0.22368290088906978
1999	0.40341218491824465
2000	0.48703219228885275
2001	0.6218652812881617
2002	0.7919127279971216
2003	0.7773218634017192
2004	0.721465950344645
2005	0.6759925011869559
2006	0.662946312521288
2007	0.929048227949449
2008	1.3059806326360273
2009	1.2834583639725483
2010	1.0768961158326058
2011	1.1444791124630271
2012	1.0916891125772283
2013	1.1783921446923329
2014	1.2499608319579487
2015	1.1681863910415573
2016	1.1205135985727916
2017	0.9629864390238949
2018	0.785417652319277
2019	0.783765811954327
2020	0.8199982098499808
2021	0.8750307373747613
2022	0.9444446656006944
2023	0.989088784292753