Year	annual %
1961	-0.47425550081847234
1962	0.6986515339203976
1963	1.7398235418720986
1964	1.6322532643166596
1965	2.2311872814194658
1966	2.4431401916213105
1967	2.291896619877079
1968	2.3121738037831676
1969	2.3901836153311677
1970	2.390111804784297
1971	2.34720386208123
1972	2.1307252041688827
1973	1.9171303052145419
1974	1.672254850339499
1975	1.4673863494221848
1976	1.3569978773651457
1977	1.2198010273370983
1978	0.9233991521150102
1979	0.6336339478892228
1980	0.5528819103641354
1981	0.5257076012411943
1982	0.5981819684640186
1983	0.6697305392088424
1984	0.5475675489805383
1985	0.543167402625258
1986	0.5979312264557564
1987	0.6504909967746784
1988	0.6211176377122172
1989	0.5393006527650783
1990	0.49586840280262834
1991	0.29185037495386723
1992	0.10455873235582658
1993	-0.03241743418523413
1994	-0.10879075832379215
1995	-0.18221087511285816
1996	-0.2390959645411499
1997	-0.298537258183714
1998	-0.3947701313829697
1999	-0.5077999745981145
2000	-0.6267980911655968
2001	-0.8328663329900934
2002	-1.0444627021184374
2003	-1.142504199872107
2004	-1.2127720634399992
2005	-1.268578987612372
2006	-1.3075174145437671
2007	-1.3714235630094294
2008	-1.3892579150123794
2009	-1.4235183488605259
2010	-1.4841190241806146
2011	-1.3577214212805302
2012	-1.2554899703863214
2013	-1.2805140303526485
2014	-1.3485345517826346
2015	-1.410354849819342
2016	-1.4922917739348662
2017	-1.5288834286125876
2018	-1.600584051938199
2019	-1.6719522617044902
2020	-1.7790297573085354
2021	-1.897157001940343
2022	-2.147340271420134
2023	-2.0201244028068857