Year	annual %
1961	4.60854313560565
1962	4.488618851416646
1963	4.355801503914364
1964	4.2002793595166485
1965	4.2396069617821075
1966	4.085033809650092
1967	3.9423291509909286
1968	3.8012257994117733
1969	3.539849748096159
1970	3.0128318216676915
1971	2.472998340759819
1972	2.349833356879835
1973	2.4028190517693235
1974	2.406486697707634
1975	1.9305080616285997
1976	1.9138028764733976
1977	1.9663520584654075
1978	2.0111875344777803
1979	2.1404758871718226
1980	2.347740872424112
1981	2.382261817801607
1982	2.4341755905915203
1983	2.5006079770980203
1984	2.530683699008897
1985	1.9356177578618314
1986	2.176387692899989
1987	2.4050662453597353
1988	2.399082116177606
1989	-1.0798757550648754
1990	0.4427419007143333
1991	0.4705293870547752
1992	-0.24062256024361706
1993	-0.5184172645865953
1994	-1.608873441484841
1995	-2.0244804429965284
1996	-1.4769799042525467
1997	-1.5400028019194243
1998	-1.68911275071001
1999	-0.8854674935771726
2000	-0.16998707919627737
2001	-0.04003475961818945
2002	0.1340091303276295
2003	0.4661102047572199
2004	0.8244554779522286
2005	1.0182662741161392
2006	1.1868765700579191
2007	1.2728856235300303
2008	2.0018366563790506
2009	2.11111246374793
2010	1.540051355127542
2011	1.5598929024378836
2012	1.5368847014935172
2013	1.5674944044915813
2014	1.598813364691477
2015	1.5892031056708582
2016	1.549612380381182
2017	1.486029960270077
2018	1.4748558194270363
2019	1.484439819832124
2020	1.526047150657357
2021	2.556167696428179
2022	2.5771430509041253
2023	1.6669657462074765