Year	annual %
1961	2.55806125883541
1962	26.156875615359375
1963	16.72736732570239
1964	21.506574548696232
1965	23.34922964049891
1966	11.65799256505576
1967	1.2118790784391984
1968	-10.263157894736844
1969	5.718475073313784
1970	14.937586685159504
1971	14.540847109931224
1972	29.161399072903492
1973	41.460032626427406
1974	16.260162601626018
1975	0.6695432227347072
1976	32.97861858311163
1977	5.7868998221695405
1978	-7.116340967990475
1979	67.09524168614735
1980	29.670329670329654
1981	37.93721504889849
1982	24.832528038149547
1983	83.50971693060202
1984	73.33123330324636
1985	140.21312626492087
1986	234.49502284228373
1987	544.2375788020624
1988	12513.142341919887
1989	2700.1946472019467
1990	7677.834352843041
1991	1519.6432405645
1992	20.065526279486825
1993	25.196040696037826
1994	65.90189510393245
1995	35.07122113124049
1996	52.526489257499755
1997	52.54455465141055
1998	32.149976685858825
1999	18.809730894400147
2000	9.37517999689152
2001	4.105191583179662
2002	13.30016388120415
2003	12.64298799710012
2004	17.216285452451384
2005	9.779621372077903
2006	8.420146695844023
2007	18.47909269722769
2008	7.329936444768061
2009	14.338949202342318
2010	21.673379789112076
2011	12.621632381142655
2012	15.393825109014388
2013	18.319301572778556
2014	15.43075284361531
2015	18.961971142455695
2016	11.044160742698397
2017	16.018537425825524
2018	-18.653475333639516
2019	6.231608156664499
2020	15.627794677138473
2021	13.823090408789376
2022	11.331899633541873