Year	annual %
1961	4.993622696640672
1962	4.955156464736913
1963	4.9325475618761665
1964	4.922694076515067
1965	4.876705907591302
1966	4.750675768193111
1967	3.3368411995152996
1968	2.215890280169942
1969	2.0103845832503775
1970	1.8848846651801703
1971	1.7768910071024848
1972	1.696090647537111
1973	1.629710408856452
1974	1.678534700226377
1975	1.7297613860476155
1976	1.684832385002721
1977	1.6365633956036825
1978	1.4398187554288042
1979	1.3303302745116237
1980	1.2493399429009444
1981	1.1711385890837893
1982	1.1145923699555766
1983	1.078677093937364
1984	1.071841776988202
1985	1.0512213647354516
1986	1.0448646300815727
1987	0.8208354720013477
1988	0.7014714347511332
1989	0.5845603227953393
1990	0.49643430292893537
1991	0.4273701024623655
1992	0.39458276462137576
1993	0.37099238735413814
1994	0.382796639474622
1995	0.3857116331383451
1996	0.36243789811647076
1997	0.5910490913400039
1998	0.798433278543083
1999	0.757984915090493
2000	0.726874042601457
2001	0.7174237388302063
2002	0.6956112527652446
2003	0.7073930963152516
2004	0.7230092021395444
2005	0.6851168313554453
2006	0.6520256198275233
2007	0.6074368722125206
2008	0.5074108824862295
2009	0.428884157422539
2010	0.4549271583491599
2011	0.44097562670077195
2012	-0.13486713666636166
2013	-0.6091631920309133
2014	-0.6651465000348472
2015	-0.7019837597617722
2016	-0.6213596453048522
2017	-0.5023391748306262
2018	-0.4184964873768925
2019	-0.2923436912139972
2020	0.2553333073228339
2021	0.7417002879199355
2022	0.8820299028125724
2023	1.002605487400556