Year	annual %
1961	3.34212498690467
1962	3.2165672552741227
1963	3.0909245915807873
1964	2.9489343083809474
1965	2.9203590098334935
1966	2.8413685430263165
1967	3.150859266694227
1968	3.0254283865040232
1969	2.922408428257205
1970	2.8979439510563214
1971	2.8531202372149806
1972	2.232493955754555
1973	1.9049429216320375
1974	2.139832114844015
1975	2.349981644619589
1976	2.2180316722864
1977	1.5867914548970705
1978	1.1044318459018792
1979	1.017214072137761
1980	0.9554304455968551
1981	0.8725959325535395
1982	0.4504193108105349
1983	0.033911716823048166
1984	-0.09894133586407527
1985	-0.1556772983141555
1986	-0.09352284197558174
1987	0.2463718060370086
1988	0.4064587282668626
1989	0.25881970223705564
1990	0.17684959765263253
1991	0.3080372080080246
1992	0.9212294315246632
1993	1.3346924056277953
1994	1.4276651129110816
1995	1.4500762407219183
1996	1.4476764752761226
1997	1.4425013936508244
1998	1.4448823160879385
1999	1.419287423522136
2000	1.3944796300870044
2001	1.2386189661760345
2002	0.012211354132222619
2003	-0.6787661292162307
2004	-0.7800004989026319
2005	-0.8261013911556895
2006	-0.7247044518906995
2007	-0.5299162013155447
2008	-0.4107198431470773
2009	-0.37415572366157535
2010	-0.3294980056744772
2011	-0.24847915442337207
2012	-0.2799575471413051
2013	-0.3142793488180661
2014	-0.3204468319956186
2015	-0.339655744820821
2016	-0.27307854319293057
2017	-0.22422118636557442
2018	-0.14627523243393115
2019	0.015682584522062504
2020	0.4875451249913992
2021	0.9422554247281031
2022	0.9283546183699929
2023	0.8565634996239122