Year	annual %
1961	2.2207622750057006
1962	2.2138000067220656
1963	2.2142120801810585
1964	2.292014841371839
1965	2.279102278974647
1966	2.2514803921833924
1967	2.255236488899949
1968	2.237058032816718
1969	2.1545368987153135
1970	2.0810137294009716
1971	2.0032332403256436
1972	1.9118987328788088
1973	1.8356972291397753
1974	1.7477385617872325
1975	1.6832105455946176
1976	1.6704111630029783
1977	1.6498474799758838
1978	1.6653226235939547
1979	1.6992710324474747
1980	1.650909345992569
1981	1.609000889375074
1982	1.5853291197963322
1983	1.4326074785837821
1984	1.3767098957500492
1985	1.394692743096209
1986	1.412177518183717
1987	1.412904436926973
1988	1.3797570296549493
1989	1.3028611594360908
1990	1.2685041419442151
1991	1.2460260187486076
1992	1.2060339352147031
1993	1.1532793055787778
1994	1.058403639818411
1995	0.9348492315395345
1996	0.8137766608109869
1997	0.7070619193850299
1998	0.6230985992016196
1999	0.6072099609221197
2000	0.5855307949632685
2001	0.7818610918236595
2002	1.0210638916301824
2003	1.0204812333178603
2004	0.9837438207511295
2005	0.9563371185867885
2006	1.0139020636432943
2007	1.0606522135488774
2008	1.0439602891755149
2009	0.9839867413695549
2010	0.9239484801656922
2011	0.9390961276626352
2012	0.7700896839983978
2013	0.5413848969194099
2014	0.4839194015533516
2015	0.41030724334171376
2016	0.34799971543553887
2017	0.28941744003113457
2018	0.6431220831121848
2019	0.4780798577862874
2020	0.37328882779150646
2021	0.8944406549773258
2022	-0.09201902991664983
2023	-0.8800504954883789