Year	annual %
1961	3.02390332224405
1962	3.11632349574114
1963	3.06718829433186
1964	2.945226450758
1965	2.76883117548397
1966	2.74998424495316
1967	2.64710842224374
1968	2.64662598720826
1969	2.68356576647516
1970	2.46390513906291
1971	2.50207499811608
1972	2.58004142249163
1973	2.51701393930654
1974	2.42342747973301
1975	2.20523068649893
1976	13.1683423419682
1977	11.8765589092663
1978	-8.26282448035079
1979	-9.24947130450801
1980	2.09824969532703
1981	2.12062047225661
1982	1.40755158454098
1983	1.19335287306629
1984	1.80429316933837
1985	1.97780951728289
1986	2.48713613983226
1987	2.47397255033329
1988	1.9357446074711
1989	1.95788657626897
1990	1.91594749510416
1991	2.01190351747569
1992	2.12289417037661
1993	1.94049003899507
1994	1.79967332576435
1995	1.82211890936227
1996	1.86655636519815
1997	1.80083114688498
1998	1.71933079596685
1999	1.69033936841079
2000	1.6480313517987
2001	1.57429758089142
2002	1.30076237598121
2003	1.29904469608094
2004	1.54172773032086
2005	1.48078594660326
2006	1.64097999986534
2007	1.88355982920981
2008	1.60884613336982
2009	1.29127979774658
2010	0.898071621012191
2011	0.98111944066669
2012	2.60752084121081
2013	9.22649612823576
2014	9.97196954242858
2015	1.96637326864653
2016	-2.2172797902348
2017	-2.4155210315248
2018	-2.62721254105458
2019	-2.87986589552119
2020	-2.07933690590844
2021	-1.24903516691702
2022	-1.85691249289585
2023	-2.50498427319778