Year	annual %
1961	2.978048674215631
1962	2.8062712182231113
1963	2.783051455988132
1964	2.7577921667042467
1965	2.517113270611906
1966	2.132307418621469
1967	2.1317749866625078
1968	2.290465091353868
1969	2.1324432679441516
1970	1.9515190750690172
1971	1.906422637158545
1972	1.923585019735511
1973	1.9307895502215437
1974	1.9558930005781214
1975	1.8288042006366325
1976	1.6405088170363629
1977	1.58288079336898
1978	1.5124083865848097
1979	1.1386327173996018
1980	0.840561911923728
1981	0.8197842575626342
1982	0.8789472721996745
1983	1.0022542423929444
1984	1.038791439643465
1985	1.0593932572705629
1986	1.135057751357608
1987	1.2609607820599056
1988	1.2561104864609498
1989	0.6355450332040687
1990	-0.07051939914413823
1991	-0.5438700944193401
1992	-1.8824231578820128
1993	-2.0489320529919324
1994	-1.5257125732591523
1995	-1.6451806819518422
1996	-1.271929778842725
1997	-1.0696149646807183
1998	-1.160375556382591
1999	-1.1519821681992881
2000	-1.188488738974579
2001	-1.4635092086101136
2002	-1.3091369861128825
2003	-1.0401272473984888
2004	-0.9438868636278415
2005	-0.9334359577872394
2006	-0.9657733769704111
2007	-0.9147993751928868
2008	-1.1481836250729853
2009	-1.6805683859540232
2010	-2.041489813836226
2011	-1.7794752662243427
2012	-1.199087751391208
2013	-1.0298701236751364
2014	-0.9019479530102755
2015	-0.7774373037184082
2016	-0.8535771714096375
2017	-0.8069097769308806
2018	-0.6807342065001911
2019	-0.5778859801721433
2020	-0.5649914796724924
2021	-0.6882642826280124
2022	-0.09761336883178297
2023	0.3168569967156969