Year	annual %
1961	1.703082771817236
1962	1.5796938232491442
1963	1.4888503137935487
1964	1.4449683246924252
1965	1.310310518316271
1966	1.2278122198129182
1967	1.1617334151823684
1968	1.0617038361864388
1969	1.0184963634804092
1970	1.1941419116102736
1971	1.4338284068877556
1972	1.084577099784795
1973	0.9845919645064214
1974	0.9642771870476139
1975	1.0366483639682826
1976	0.9904002092242052
1977	1.026850813475292
1978	1.0587569061383704
1979	1.0983459841126972
1980	0.9967468497817293
1981	1.010990922361671
1982	0.9811341244223115
1983	0.9258773613588005
1984	0.8773027913138804
1985	0.8927881013004964
1986	0.9353414482635003
1987	0.9398714923009237
1988	0.9507835849422719
1989	1.0339183222037889
1990	1.1740972946281403
1991	1.335375398419501
1992	1.3755703717254164
1993	1.3051044556815725
1994	1.2205627250581017
1995	1.1821491108285045
1996	1.1582632051785708
1997	1.1900776657941066
1998	1.1389305940919314
1999	1.1214603519149193
2000	1.1009288191017959
2001	1.0042313320444123
2002	0.947624765689909
2003	0.8670861547226849
2004	0.9303910378040854
2005	0.9284381662641152
2006	0.9737383519060643
2007	0.9574632530642901
2008	0.964003825174899
2009	0.9071243927914736
2010	0.8608567014116915
2011	0.7539635425371216
2012	0.7712968835101606
2013	0.7314046110024464
2014	0.7629691570706427
2015	0.7412555064803854
2016	0.7681110663632467
2017	0.6914360386006422
2018	0.6202566350699783
2019	0.5598251177526095
2020	0.9855145355897719
2021	0.1983502145871796
2022	0.5188182758968338
2023	0.7526935894878477