Year	annual %
1961	3.4180543375916557
1962	2.560773023223689
1963	3.2116921867489054
1964	5.800203533286009
1965	1.554566051931431
1966	4.956987207375917
1967	3.170000300543691
1968	1.0225336587076583
1969	6.969811598856367
1970	2.682680974562942
1971	6.358650504951811
1972	6.539215678603554
1973	13.387368046760258
1974	23.132848347807226
1975	15.58259720686226
1976	19.363545686601796
1977	30.44223575875742
1978	16.002378529003096
1979	19.67329800792139
1980	41.405137156633685
1981	25.07554762024104
1982	61.08111847298915
1983	88.85988116723095
1984	59.26463122867756
1985	59.14951622990074
1986	70.85101727124632
1987	142.0253387238782
1988	100.57598632182604
1989	27.39440044147139
1990	28.105912393932044
1991	23.71325751258337
1992	14.81388557810179
1993	42.867623315507785
1994	8.360627221424721
1995	38.8092293997712
1996	26.696773997590626
1997	17.73369115346803
1998	15.716055443006937
1999	15.319081335582126
2000	10.697964531004686
2001	6.4730091787719175
2002	5.502324113069903
2003	4.27966722239654
2004	8.117443171744071
2005	5.884982744592065
2006	6.1071543478173
2007	6.127792154979289
2008	6.310381619816667
2009	5.243482440151894
2010	4.372964400492336
2011	5.669633673752685
2012	4.542214937769046
2013	1.7038827864784878
2014	4.368368913124641
2015	3.2254289269251473
2016	6.077587823038627
2017	6.567594929618664
2018	5.204499978818447
2019	4.2594400614699595
2020	4.818963687016435
2021	4.536692544592242
2022	6.442142222157997
2023	4.488086730431235