Year	annual %
1961	23.23454079765825
1962	19.343824228028502
1963	15.462122154496827
1964	17.97026502908856
1965	14.913242009132421
1966	14.638798378765
1967	19.91681109185442
1968	16.24465256098971
1969	21.64810025860354
1970	15.367319406402027
1971	10.64847625797307
1972	26.955964771817452
1973	31.51203269259876
1974	45.208501170061766
1975	34.796507403933795
1976	40.63207408496252
1977	35.19803774005631
1978	26.666838470260796
1979	24.901224370216347
1980	48.13947275831064
1981	38.303758551909624
1982	25.53382975644738
1983	29.111023571181573
1984	23.423266984333473
1985	23.428575062278327
1988	14.689886705609364
1991	32.84109282224987
1992	39.032279015392604
1993	39.010034194741856
1994	45.73487109175471
1995	28.23285801250715
1996	21.027962093830357
1997	23.881147153652797
1998	11.35819809597435
1999	11.897458202955635
2000	3.6484493432637195
2001	19.58573289047589
2002	4.6075053241834905
2003	10.525395871406438
2004	19.288775312029657
2005	17.633478578341393
2006	17.949588547840285
2007	17.392251207294734
2008	18.481979275553925
2009	8.05588580513637
2010	11.457662593308267
2011	18.923817041861454
2012	16.07160807236576
2013	13.734793833431027
2014	9.190896695850428
2015	11.420995985679376
2016	7.1865680650631605
2017	6.789771088587407
2018	5.107176038687246
2019	8.8516579089004
2020	12.708341502553061
2021	11.960368960729214
2022	10.413931850343962
2023	6.080917317978309