Year	annual %
1961	1.9117717490344066
1962	1.7854364681934978
1963	1.4589439263550334
1964	1.1080550559623557
1965	0.6365505511114933
1966	0.28211022085011866
1967	0.3965921120750091
1968	0.6006450749859557
1969	0.1204285306830678
1970	0.12384630918186455
1971	0.5843028490873399
1972	0.8458871766029546
1973	1.021174229966672
1974	2.382864009383308
1975	4.778711474958661
1976	3.8202177256605143
1977	2.026042727502885
1978	2.0387821434908995
1979	2.0250601998993223
1980	2.0301775786066734
1981	1.880958316846635
1982	1.80040699006014
1983	1.6435933234507
1984	1.5526709624103785
1985	1.4303562362740494
1986	1.236744210378229
1987	1.105849205894376
1988	1.0225679662961427
1989	0.9659343197156692
1990	0.8816710759471564
1991	0.9190910476574251
1992	1.2767935971129627
1993	1.454745047051455
1994	1.585966205567512
1995	1.64597531081268
1996	1.6610180126882308
1997	1.7094550472021
1998	1.7526484823813102
1999	1.7956370230880676
2000	1.9161069040425793
2001	1.8839384303972462
2002	1.6713344403299846
2003	1.4848205337047171
2004	1.3346008707395898
2005	1.260433270124597
2006	1.243828472846647
2007	1.243482454676503
2008	1.177147515066269
2009	1.1094042145161873
2010	1.0464775810896445
2011	0.8386906361479765
2012	0.5642375477286763
2013	0.40031968348301084
2014	0.39305610038962385
2015	0.5000604713379608
2016	0.5811021007568014
2017	0.6354247212920537
2018	0.7008054474884151
2019	0.868176935448447
2020	0.9319220176072566
2021	1.436413255836066
2022	1.2536331928226916
2023	1.8809148654883483