Year	annual %
1960	5.81407628204986
1961	8.28319045648716
1962	4.6970939506247
1963	26.3554355250467
1964	17.0724352164554
1965	7.5906836693158
1966	16.7281682748598
1967	8.32819136425948
1968	7.4475387831777
1969	6.98166307955375
1970	6.90862275848241
1971	11.9402616979216
1972	12.4444589907729
1973	22.5296486781843
1974	23.8709573656697
1975	23.4375025650554
1976	19.8312249167931
1977	33.802818357982
1978	17.7631590853462
1979	24.1340757440455
1980	26.5526531495356
1981	27.4537624347993
1982	24.7209882528585
1983	19.5973170624765
1984	16.1616171361426
1985	24.090174368125
1986	18.8424631612406
1987	23.302028364018
1988	28.1083969771704
1989	25.8675480831988
1990	29.1520245976215
1991	30.3878204854436
1992	27.0106266231361
1993	22.4424828533275
1994	22.8462417553045
1995	20.8917930194849
1996	20.7975755127402
1997	18.4700217119089
1998	18.6769799276672
1999	10.8736870857471
2000	9.22534818585366
2001	7.96556090304834
2002	6.35150728778872
2003	7.1297886294186
2004	5.90402005546502
2005	5.05101962689696
2006	4.29342363628927
2007	5.54438485815156
2008	6.99688495554511
2009	4.20251661216482
2010	2.27200227892008
2011	3.4150334477625
2012	3.16930188840055
2013	2.01699224310383
2014	2.89883787761738
2015	4.9898311584953
2016	7.51346024627675
2017	4.31431325695011
2018	3.24056932930569
2019	3.52301932741447
2020	2.52663500084706
2021	3.49505757399448
2022	10.1772313546166
2023	11.7359044948689