Year	annual %
1961	3.1033343319455895
1962	3.012855315335969
1963	2.686899124292893
1964	5.684513241074669
1965	2.4061968542458345
1966	3.6273538089172987
1967	3.122443710708694
1968	1.992528669019407
1969	3.719008264766572
1970	4.445575282810552
1971	4.643782906365814
1972	6.47615242257249
1973	14.758346008646171
1974	22.462067211453807
1975	15.525870390497722
1976	10.78256628352814
1977	15.80540477272364
1978	10.812584897172172
1979	15.088434074157796
1980	18.55879559661249
1981	10.047858744175258
1982	7.436987913116482
1983	7.740755184035649
1984	16.694506313104696
1985	18.77973510381132
1986	15.934598432788619
1987	10.14438326894971
1988	12.055576655298708
1989	12.129493238722503
1990	25.11710588360087
1991	23.71325751258337
1992	13.19920440951492
1993	10.90861434874438
1994	12.573370441994285
1995	11.076427188031019
1996	9.60681288753851
1997	7.006173042026262
1998	6.50470125160993
1999	3.8341544024193865
2000	6.830114668211266
2001	6.119229850113996
2002	5.502324113069903
2003	5.759740766556746
2004	7.283033406814781
2005	5.940797630219279
2006	6.7742741191329685
2007	6.439038087027569
2008	8.778552723675602
2009	3.6479649188123204
2010	5.443413315424863
2011	5.95334315490372
2012	4.542214937769046
2013	3.3584463459484653
2014	2.857006484710382
2015	3.2254289269251473
2016	3.678068144260422
2017	3.6713845127503504
2018	2.277415317621333
2019	3.3275329475476383
2020	2.873260201661523
2021	4.605728088887929
2022	8.054460502726073
2023	4.790954499904494