Year	annual %
1961	3.2717768389383366
1962	4.896293570195525
1963	5.526017628259353
1964	3.993906333470761
1965	3.001883438007141
1966	2.9718710721245714
1967	3.041367854374883
1968	4.399274072039788
1969	7.395983613342992
1970	5.4247392538376005
1971	5.90026526066174
1972	6.804978584293693
1973	7.859701482002478
1974	11.832958308540228
1975	13.752856927288121
1976	10.749208780418769
1977	8.775157532549045
1978	9.279404771967307
1979	10.309975652645747
1980	11.68693736880897
1981	11.691972461236517
1982	12.09476497806861
1983	9.650344941997858
1984	7.067528952536506
1985	5.453758556903438
1986	5.0551716344616295
1987	2.455860984087039
1988	3.193401334029204
1989	3.285247547984781
1990	2.657162862849532
1991	2.5470848295290125
1992	1.9670557567453102
1993	1.623502953233185
1994	0.9248641579931132
1995	1.1247883745617315
1996	1.3580780664666179
1997	0.8782016399709391
1998	0.950262691440912
1999	0.20381115472984845
2000	1.5532902530465975
2001	2.008334185388378
2002	2.067425741384497
2003	1.8593682441087651
2004	1.622675440061343
2005	1.9363414190136723
2006	2.1553273912771544
2007	2.5566370154461993
2008	2.3670738404367455
2009	0.06662747604960373
2010	1.0696974762121556
2011	0.9479602253829711
2012	1.1618250317351908
2013	0.7781005311440623
2014	0.576944232991778
2015	1.138248785332351
2016	0.5225593434004452
2017	0.5215772633056872
2018	0.9922245663778
2019	1.278592146329487
2020	2.839876195512076
2021	1.4239482698479264
2022	2.947216929114063
2023	5.472333303987085