Year	annual %
1961	-0.2373129790712909
1962	1.5291098069181857
1963	4.848730319817491
1964	3.125918134952684
1965	1.8191286468987897
1966	-3.7257279243145973
1967	-11.124031927483685
1968	-0.7155424323681387
1969	12.648552565240749
1970	14.846616457305046
1971	7.993401363194536
1972	0.722516690851279
1973	1.4758681658750987
1974	7.269173938314083
1975	-4.714760015853997
1976	5.623173664832009
1977	1.8017249901687507
1978	-4.634257183791874
1979	2.185336939402177
1980	-0.900806386260399
1981	-9.37754809059524
1982	-6.019821402744185
1983	-8.843220202066334
1984	-2.053867301725603
1985	2.6230539614440147
1986	-1.3157489529725552
1987	-1.2744362516922791
1988	1.9412947580524929
1989	-1.0234282899197922
1990	3.0382338396911734
1991	-1.5775405897019823
1992	-0.24019987437688428
1993	-3.8851843889557074
1994	-2.87837183228568
1995	-0.7538204218743374
1996	1.9109525091339776
1997	1.711963066247833
1998	0.8638574332578486
1999	-1.1306679915744127
2000	1.0804524271947713
2001	2.343821743896598
2002	6.921383049698491
2003	2.6420724588684266
2004	5.022001903731848
2005	2.90518633226165
2006	2.4719567243858904
2007	2.620199463273323
2008	3.353546010105603
2009	3.3429893351593734
2010	4.009921041873383
2011	1.9450520936634916
2012	2.259037913999663
2013	3.2548768480017003
2014	3.0898585674335095
2015	0.08825812132484145
2016	-2.5036445511095877
2017	-0.41020350710593334
2018	0.16889804283641752
2019	0.5729549192148511
2020	-3.527789055314045
2021	1.3858147519621582
2022	1.2138567094575876
2023	0.7820409070242249