Year	annual %
1961	5.026121976650572
1962	5.231844301189881
1963	5.325669828981688
1964	5.422948585673382
1965	5.486499263859528
1966	5.513572649008026
1967	5.758531994437604
1968	5.820860472702719
1969	5.84263524281765
1970	5.635193812127696
1971	5.596270676793253
1972	5.722319263911473
1973	5.797798337860897
1974	5.723285456347412
1975	2.1613924242473956
1976	5.737873925542019
1977	5.739159567147922
1978	5.9580869228454105
1979	5.888361963117745
1980	5.922856479367837
1981	5.224049145106875
1982	4.517478606055263
1983	4.910121183108586
1984	5.135874252807639
1985	5.180191255831318
1986	5.0704012994338115
1987	4.98950223758392
1988	4.868037561103122
1989	4.711426520661462
1990	4.588832671595938
1991	4.285423875441936
1992	4.404060505256041
1993	4.557690851745505
1994	4.404740536323828
1995	4.147135367098187
1996	3.868999351681765
1997	3.8803686302290856
1998	3.9112493225694607
1999	3.919351529188603
2000	3.8683213500792846
2001	4.0583033459121225
2002	4.293626481272895
2003	4.313774921025029
2004	4.181385105111119
2005	4.2026478237923754
2006	4.127612984733759
2007	3.8519954747295913
2008	4.1276487148599585
2009	4.15082274065756
2010	4.183942036190075
2011	4.2159447842129225
2012	4.167455800418125
2013	4.162109575248323
2014	4.16388657584865
2015	4.134998054326019
2016	4.164002815764604
2017	4.164685205022309
2018	4.095524752656914
2019	4.057615276102354
2020	4.059666163455304
2021	4.01300179954454
2022	3.935238749201247
2023	3.909122239245022