Year	annual %
1961	2.9797788494561672
1962	2.9745206537125313
1963	2.96888961091706
1964	2.9189890034760424
1965	2.8792418455055895
1966	2.736670777101409
1967	2.4977221592071146
1968	2.361478350393881
1969	2.331013691880841
1970	2.2683895862775927
1971	2.1430525013569337
1972	2.047686787898087
1973	1.98458312787524
1974	1.9599830813457544
1975	1.9852737251225676
1976	2.0719498528079185
1977	2.142763333170734
1978	2.1845107811176376
1979	2.2609074547965946
1980	2.2868585788486087
1981	2.2835055408640983
1982	2.2526203731830776
1983	2.227116598771971
1984	2.232796415489929
1985	2.2102564199317385
1986	2.0970544513029523
1987	1.9325456182494634
1988	1.7673132191978027
1989	1.6230429455409023
1990	1.545440513145934
1991	1.346549993441215
1992	1.258665197168483
1993	1.3197689951662852
1994	1.2659756258676822
1995	1.1918148147554035
1996	1.2958727048786471
1997	1.4976484972917063
1998	1.560451499473487
1999	1.5279741476591227
2000	1.4619149984972637
2001	1.4010606816815283
2002	1.3427039041407483
2003	1.3008692060696632
2004	1.274961988974681
2005	1.2423234271762311
2006	1.230576923253949
2007	1.2065250006819639
2008	1.1422780333842724
2009	1.0945118511787228
2010	1.1094177050799345
2011	1.1246627597711267
2012	1.1074711981863885
2013	1.1054126162636067
2014	1.1029104242037562
2015	1.0858484651445934
2016	1.0852890443714784
2017	1.0761188600927625
2018	1.0450986872162957
2019	1.0295487338590306
2020	1.2124665328638429
2021	1.3773468250001315
2022	1.4159704216437632
2023	1.4667950477052187