Year	annual %
1961	2.669366419469526
1962	4.043042039074734
1963	5.284722405447155
1964	5.14859805746562
1965	1.9950851035199975
1966	2.450026705220523
1967	2.5121078154098058
1968	2.553644935016308
1969	2.6575228998644462
1970	2.6990782813794567
1971	2.8551083645220103
1972	2.7424382541583583
1973	3.086928756901216
1974	3.331487467215382
1975	2.2301328437374934
1976	2.643201048792747
1977	2.5314595373425703
1978	3.7864170608870324
1979	5.019036487046719
1980	5.014337466939779
1981	5.059853349637436
1982	5.1423092021551895
1983	4.553610207153241
1984	4.446436224080699
1985	4.433601093873676
1986	4.4798659749056355
1987	4.525891228500029
1988	4.498244770011198
1989	4.40873317794204
1990	4.33465761055993
1991	4.415919999658115
1992	4.314650558896659
1993	4.216147413393998
1994	4.159608637726194
1995	4.081739050172331
1996	4.022316267509069
1997	3.954458778001694
1998	3.8603037726283134
1999	3.7317352177786347
2000	3.653785310161581
2001	3.845919471040048
2002	3.9329879265479946
2003	3.831572064872063
2004	3.739149446508776
2005	3.656064652081213
2006	3.49642444573945
2007	3.3716376409020654
2008	3.3054476480919277
2009	3.224699169408794
2010	3.15221016252454
2011	3.0019317439703457
2012	2.994271548591911
2013	2.919518135837535
2014	2.833123656575083
2015	2.739836144615282
2016	2.6822945585884383
2017	2.6409859562376994
2018	2.4487709086489673
2019	2.2768381928940187
2020	2.1021120889065372
2021	1.8909200576067775
2022	1.734129309119254
2023	1.6164674877810654