Year	annual %
1961	6.568981592561869
1962	12.948516429804897
1963	43.82042734839206
1964	47.93436207996896
1965	38.840095374723404
1966	28.581360805573127
1967	25.144887538821095
1968	33.4686701543952
1969	40.16053255938215
1970	40.575785926256316
1971	17.671671651434778
1972	87.59486368471136
1973	414.81031100220105
1974	678.6084621836019
1975	347.2012094205586
1976	247.30850855859165
1977	101.77362184475606
1978	56.28464055226283
1979	47.97768510242568
1980	29.117659902514276
1981	11.568852534747393
1982	7.656347255121517
1983	30.963672486806928
1984	15.737532092894213
1985	41.68190572857057
1986	21.45489665680283
1987	25.84841898245773
1988	21.717881186714067
1989	13.756031768694953
1990	22.47093709740824
1991	21.390982300084445
1992	13.464377021538553
1993	12.164419672272814
1994	14.463984951599713
1995	11.680718107881688
1996	4.079776196244708
1997	3.33058050494175
1998	0.7789902059607527
1999	2.187767870564869
2000	4.56004348689325
2001	4.27714698160932
2002	3.3406603675506688
2003	4.300300885890934
2004	7.024761706878223
2005	7.120315356519228
2006	12.349895918014141
2007	5.088757064565911
2008	0.3111325029362604
2009	3.5777950370729457
2010	8.857441495831765
2011	3.260514860149243
2012	0.7634666792120299
2013	2.2607706122646647
2014	5.852891628172728
2015	4.9543655271044145
2016	4.560656043908054
2017	4.828191881689037
2018	1.5901997375738404
2019	2.567787213794958
2020	9.66572269693961
2021	6.914755884689399
2022	7.913783465702821
2023	6.599512045668334