Year	annual %
1961	-2.3379354703101853
1962	-0.7995943384064361
1963	-1.6437630428959977
1964	-6.310523799404962
1965	1.5433090538507628
1966	6.024686428287936
1967	7.49069424027951
1968	-4.154865145536007
1969	5.008282601987176
1970	7.1845995937433855
1971	11.508569367766029
1972	2.6778889668382675
1973	10.110858584942164
1974	18.69756614362754
1975	27.627462962035892
1976	-3.2408989600617844
1977	3.9234356103187196
1978	-1.1394950803593673
1979	0.032756972583641186
1980	-7.812498408430528
1981	-2.029011986145619
1982	2.170967100948488
1983	10.469009234717447
1984	1.6822299455275527
1985	-1.8128594968794545
1986	-13.156999475189863
1987	-9.14458789044511
1988	-2.277093575695673
1989	-2.604451971398433
1990	16.627319720282884
1991	4.833869064460771
1992	2.1397347778962654
1993	2.4736309759611856
1994	-4.776807758250428
1995	-7.3208066731807975
1996	2.623157530784354
1997	6.8373064784301505
1998	1.3618937419940949
1999	-1.4790111409279376
2000	8.795340143702916
2001	4.317264599825805
2002	10.013257533004037
2003	0.5785441760032768
2004	7.062899623979078
2005	5.402798598687923
2006	5.909865264907381
2007	11.127068052460558
2008	-4.888616757494063
2009	0.6901245654001116
2010	2.911147539357131
2011	3.0688715747578357
2012	-3.1281546227581316
2013	-2.4273974452758296
2014	-1.230876884922722
2015	-2.603893205011147
2016	2.4139736434708965
2017	0.11175841627387229
2018	-3.0836953805717684
2019	-5.786665497049114
2020	-0.29334116239157026
2021	3.159507747927478
2022	7.909389423742155
2023	2.5792311794033793