Year	annual %
1961	8.818011257035648
1962	15.172413793103448
1963	7.285429141716566
1964	37.116279069767444
1965	1.9335142469470827
1966	4.925124792013311
1967	1.233745639073898
1968	10.194554967260878
1969	10.445512182640094
1970	9.951862434679642
1971	11.125418490857584
1972	40.66364689771411
1973	18.84941437258485
1974	26.656248818540405
1975	37.91727610121091
1976	37.06920807150947
1977	60.30327433115957
1978	68.52987047099963
1979	15.766740764841227
1980	33.80011477404491
1981	51.317456025054874
1982	23.346025998768138
1983	40.20592712694661
1984	53.623949074955256
1985	46.16640907071478
1986	47.935271201678155
1987	53.329937898264276
1988	46.27724827781448
1989	54.66744081027031
1990	13.301355578727842
1991	39.07782359004565
1992	52.28382888951828
1993	33.50064469074833
1994	52.569518052696395
1995	43.1718945131123
1996	39.198354890624074
1997	44.08716187017274
1998	17.489312280478543
1999	25.417140486560445
2000	54.24415620687978
2001	56.53421811252577
2002	39.21416943780567
2003	23.24083486305008
2004	27.27517587218294
2005	19.46750843632503
2006	39.34051513347155
2007	36.834498963741055
2008	39.17817190137629
2009	24.73906506358895
2010	31.91773152371616
2011	33.99495043917361
2012	25.139233463831527
2013	19.500554180570735
2014	37.29264169812269
2015	25.5740170073904
2016	22.499013389216067
2017	16.065631091970026
2018	15.76090954643199
2019	21.354589534109277
2020	28.36115161445657
2021	21.303453218518168
2022	32.027099781771554
2023	37.41070892338475