Year	annual %
1961	2.776793980658106
1962	2.952387007017816
1963	2.850839720167637
1964	2.7761384704953462
1965	2.649382394693573
1966	2.529767002601863
1967	2.525335160742065
1968	2.7375351249879607
1969	2.747219519546477
1970	2.269961201691291
1971	2.1398333301874124
1972	2.2095521738286936
1973	2.076322861685834
1974	2.008679877468563
1975	2.0102914071562874
1976	1.9164893991477905
1977	1.9192335738529516
1978	1.780786415422642
1979	1.6921446036359695
1980	1.6531957506506534
1981	1.606684003496393
1982	1.713850761248423
1983	1.716782688013943
1984	1.698212263440984
1985	1.6470989564151006
1986	1.5210789174842123
1987	1.580074453134367
1988	1.4679740694623906
1989	2.265839389764557
1990	1.375264651410049
1991	-1.0315693475705843
1992	-1.4775345785203655
1993	-1.490477174490116
1994	-1.5101462152635095
1995	-1.5253934070866908
1996	-1.5457370040591771
1997	-1.5582456587770859
1998	-1.5776919046382527
1999	-1.5942338726569047
2000	-1.6143940323517414
2001	-2.1368179586786056
2002	-2.1690887566127897
2003	-2.289748621244101
2004	-2.3820009720372752
2005	-2.5189526217694715
2006	-2.686833451303232
2007	-2.860733908542082
2008	-2.92157841933936
2009	-2.8673957028984316
2010	-2.743291493211703
2011	-2.5611116929946927
2012	-2.5088544939769095
2013	-2.5248646488424016
2014	-2.5565854042113374
2015	-2.638588442715171
2016	-2.5059381848191546
2017	-2.4328253219650313
2018	-2.578121101978569
2019	-2.7460666116375263
2020	-2.8780033124524422
2021	-3.2148042109338304
2022	-3.4826718929972045
2023	-3.394335498685605