Year	annual %
1961	5.576731464886279
1962	2.467431606353216
1963	-6.570264518730269
1964	1.0169487709378586
1965	0.8305881442803411
1966	-1.4729286694682457
1967	-0.7751977748800982
1968	4.538621494009092
1969	4.409489469604978
1970	3.2148940857805
1971	4.523046277088639
1972	5.318307199315171
1973	4.925411930660189
1974	4.594161783731195
1975	4.771014129352551
1976	-1.5367875140627376
1977	-11.12865523659653
1978	3.862323992140503
1979	7.294767726849344
1980	14.997515592772174
1981	15.02378085839868
1982	20.940745814030024
1983	3.672890194774169
1984	4.310036610577413
1985	-4.099276660683643
1986	-9.592654048542713
1987	-2.7307653853993514
1988	-1.154936717036577
1989	-0.3129147305744482
1990	-1.8053791988368033
1991	-0.41179799231929337
1992	-0.1674126674748777
1993	-3.774134991469637
1994	-8.150381504832566
1995	1.2138703320962776
1996	1.5398827991841273
1997	-2.6448504085327613
1998	1.5432231282307356
1999	-5.149288719720417
2000	3.547205815897513
2001	-0.02754418810356185
2002	2.1626617373476336
2003	-1.9389961161344047
2004	0.019857937645141988
2005	3.946823459562836
2006	4.007991907368464
2007	-9.989537904844923
2008	2.842036481555496
2009	7.241581921314548
2010	5.456267250479712
2011	-1.0565788685004236
2012	6.936986162784152
2013	-3.0734432104589757
2014	4.12714178140547
2015	-1.9547143570292462
2016	-10.840781426121566
2017	-7.825309863654212
2018	-4.615554762716755
2019	-1.2294164026085355
2020	-8.428402521210671
2021	-1.2980340617502293
2022	-0.8126571630401713
2023	-0.3700278877197434