Year	annual %
1961	3.83308893639564
1962	3.75504333072691
1963	3.69865230437023
1964	3.65465063360185
1965	3.38547448899751
1966	3.06479344159205
1967	2.91998415141263
1968	2.83144214210946
1969	2.75808891843154
1970	2.6678812397579
1971	3.72088158165922
1972	5.12666697344406
1973	5.39934045005659
1974	5.3098336907212
1975	5.21546259736616
1976	5.1033015565025
1977	4.9712777654778
1978	4.82105707794227
1979	4.65987206368424
1980	4.48353092867668
1981	4.00986121049754
1982	3.5365916269934
1983	3.45729083193463
1984	3.50647399992491
1985	3.55195306993781
1986	3.57748271740773
1987	3.57143025649347
1988	3.53167868665631
1989	3.45917220088568
1990	3.35452035445772
1991	3.41910886520426
1992	3.49705554013933
1993	3.41897734022313
1994	3.34201618794262
1995	3.26346251160817
1996	3.18276188690514
1997	3.09453904752723
1998	2.99480470978385
1999	2.87998143106713
2000	2.7515762605179
2001	2.6102630692956
2002	2.44395122899014
2003	3.92194796267708
2004	6.85193933235192
2005	7.89520208580362
2006	7.37799675652121
2007	6.91804991621101
2008	6.4936855776179
2009	6.03817950789
2010	2.85774564487366
2011	-0.12928111452105
2012	1.05556298562381
2013	2.95475711852975
2014	3.84537935863732
2015	3.81660491261165
2016	3.42907892150581
2017	3.29163380324261
2018	2.07237016433842
2019	0.459362584678761
2020	-1.12524267833833
2021	-0.966024840061971
2022	0.611005553402689
2023	0.897717864437942