Year	annual %
1966	4.47981069723109
1967	1.97774154682666
1968	2.07922185813623
1969	2.9751392473965
1970	3.8126649076679
1971	4.19529837265423
1972	6.07499999951511
1973	12.0819394612938
1974	19.0704733006475
1975	12.8791818338341
1976	10.12208407342245
1977	12.15693150410245
1978	9.314183695608245
1979	11.5424155726988
1980	14.6845027763768
1981	12.413261372398
1982	10.2217271376892
1983	10.2436633526545
1984	8.497371412819795
1985	9.353330812741495
1986	10.43795799352065
1987	9.753003101709975
1988	8.98300338208989
1989	9.075624085378589
1990	11.9060546010382
1991	15.050130775937
1992	10.5274440119592
1993	9.97366476029209
1994	9.593230245534535
1995	10.0221733553239
1996	8.519951959253376
1997	7.018285998699135
1998	6.420732429712995
1999	5.02321078556241
2000	3.89952980284712
2001	3.7508205747202
2002	4.24026660688645
2003	5.452932243272025
2004	4.43526108410782
2005	4.821700507128501
2006	5.68713772607966
2007	6.17780683499409
2008	10.4469875128222
2009	4.373768870672665
2010	4.39741383150071
2011	5.811492090226975
2012	5.01827254237431
2013	4.82462314269537
2014	4.01861608078679
2015	3.095517220272415
2016	3.371530035120955
2017	3.465325394051205
2018	3.97561015740694
2019	2.75709727562775
2020	2.951922531700175
2021	4.03843012730298
2022	7.19861615609867
2023	5.875518204816315