Year	annual %
1961	1.6417351752380533
1962	1.6450124834819173
1963	1.6409271710586746
1964	1.5679868266890071
1965	1.3279709444926322
1966	1.235414119462241
1967	1.1798104290241591
1968	1.162043261111988
1969	1.176002609897129
1970	1.1943135823415223
1971	1.1821376597133182
1972	1.2622801652919258
1973	1.383920984148415
1974	1.256306488343718
1975	1.0512152871994833
1976	0.8380339826157355
1977	0.6619504647043473
1978	0.5500355662179545
1979	1.8172423915555018
1980	-0.11978668740691674
1981	-0.21783144216186973
1982	4.487320621440023
1983	4.740869470241522
1984	1.0057202259494098
1985	0.7010627711849546
1986	2.7314045064509873
1987	3.2519868946060626
1988	3.1194781832780585
1989	3.102270447795561
1990	2.4580155706332327
1991	3.361091176834303
1992	3.9520260480622063
1993	2.060052524666414
1994	2.1787497924522787
1995	4.347676058494104
1996	4.379599950499893
1997	3.3802256774092188
1998	3.3651370924601345
1999	3.4350869320180375
2000	3.3723999113679355
2001	3.287954376505483
2002	3.4072797546918485
2003	3.9284537031234037
2004	4.393855676716497
2005	3.949549652252788
2006	3.4985787684929424
2007	3.343679043938407
2008	3.4036477201503477
2009	3.4762834241251905
2010	3.343140549828357
2011	3.405970569562771
2012	3.3746680214040814
2013	3.4207793567384246
2014	3.410376030739992
2015	2.9997159622967953
2016	2.9393553117542437
2017	3.0902450727157396
2018	3.117224319889972
2019	3.0082426798706394
2020	2.8459097920372214
2021	2.8220404930063014
2022	2.744351934151708
2023	2.685005973746886