Year	annual %
1961	2.4729957373424716
1962	2.7660432545239804
1963	2.8185051042563387
1964	2.8459630686645707
1965	2.8756349364174207
1966	2.8758707885291495
1967	2.8724842292824126
1968	2.8695269100156913
1969	2.84027187235064
1970	2.8128804765842412
1971	2.8064956804931045
1972	2.7400151475591428
1973	2.730118628227673
1974	2.6931285527691204
1975	2.6412632670203724
1976	2.5724104021469953
1977	2.565169021130936
1978	2.581202676228503
1979	2.544947037010094
1980	2.488825289236955
1981	2.254185341811184
1982	2.2575828586843594
1983	2.355906586179961
1984	2.468977286881552
1985	2.401561541359583
1986	2.2199663294515424
1987	2.4259812545721786
1988	2.3865365481241234
1989	2.259287450002341
1990	1.97531390146001
1991	1.4746319803509562
1992	1.030558319568989
1993	0.7807270689421196
1994	0.6864282173786945
1995	0.5925916622341311
1996	0.4616440962983003
1997	0.31018158031780785
1998	0.15902141115859372
1999	0.014107942010413009
2000	-0.14443945849319395
2001	-0.22700345644422118
2002	-0.340888760848563
2003	-0.38593895701879183
2004	-0.38980971524974994
2005	-0.38791680018042407
2006	-0.3824125414102613
2007	-0.34541798790959255
2008	-0.24237516529722242
2009	-0.19228572193299612
2010	-0.20261203895127278
2011	-0.14394436208091632
2012	-0.09282999607850341
2013	-0.06707473446694621
2014	0.13249689383147453
2015	0.6175991180519245
2016	-0.49728374159347655
2017	-1.0922057512548469
2018	-0.26428456636614295
2019	-0.20519775962725417
2020	-0.290760519112594
2021	-0.5227355929056485
2022	-0.6883203009919764
2023	-0.6748388442694944