Year	annual %
1961	25.128205128205128
1962	20.28688524590164
1963	0.8517887563884157
1964	15.371621621621623
1965	5.368472425573451
1966	41.36174154701251
1967	5.373525557011796
1968	20.149253731343283
1969	-1.8892339544513457
1970	-3.481930888947507
1971	14.457502049740366
1972	17.860553963705826
1973	8.650729335494328
1974	27.65243333954876
1975	30.16359918200409
1976	36.92065985860173
1977	28.57142857142857
1978	24.332249633454452
1979	16.012100082034454
1980	26.29159853272639
1981	41.433370660694294
1982	12.586599366587489
1983	7.643452080082631
1984	5.54092403176742
1985	-1.5417351774833155
1986	0.40669574443003653
1987	2.5398688973681636
1988	6.858385970268878
1989	4.77704162723003
1992	0.6947329931690129
1993	5.578938681191714
1994	5.415461580551864
1995	9.37133874149105
1996	-0.5952703802137007
1997	3.8890177195160214
1998	-0.78125
1999	1.6078872493879441
2000	6.319353998437093
2001	12.80529571736574
2002	4.7541516950728
2003	7.826175794285669
2004	12.344404580524252
2005	11.989767756151403
2006	21.65884745349288
2007	19.09080744430961
2008	15.771444013907592
2009	13.41925599915281
2010	2.966072030545767
2011	8.240770343862248
2012	6.46581258937254
2013	9.75954774289345
2014	3.690838933798483
2015	1.8409075687014311
2016	3.438689231145658
2017	3.795914143815905
2018	4.057324974386527
2019	-1.467902845901833
2020	-7.349571566296144
2021	3.7927868172704424
2022	6.452754830091008
2023	1.0418133071509414