Year	annual %
1961	5.902638613937831
1962	5.99276535998408
1963	6.029646861282432
1964	6.0403954074956365
1965	5.929439215569751
1966	5.833169458723483
1967	3.7280965558174284
1968	1.9467521059919506
1969	-0.5502281708408132
1970	5.793684955479854
1971	14.197440026614276
1972	15.362725662766088
1973	13.148742031887434
1974	7.811990204789826
1975	4.3450785518960355
1976	3.898616407281119
1977	3.5940288365529622
1978	3.3453889195649755
1979	3.2441484253211277
1980	7.645086707722408
1981	12.602866910365073
1982	13.293281692829476
1983	12.599155116610088
1984	11.933507116057557
1985	11.233758116135917
1986	10.474234313268754
1987	9.64803704188639
1988	8.832921073893523
1989	8.198484243752182
1990	4.78619391010449
1991	0.5833484909837475
1992	-0.3977895575883773
1993	-0.4156658370249566
1994	-0.3893641038988632
1995	1.9020426247134976
1996	9.226545297470683
1997	13.211962030234185
1998	12.04086158284249
1999	10.838883631519845
2000	5.366075866269028
2001	-0.9823588823146067
2002	-2.8684926673471405
2003	-3.255165345474987
2004	-3.6318231929476066
2005	-3.989240151514667
2006	-4.3035492819975465
2007	-4.577508986047855
2008	-4.817317851793435
2009	-4.99944262272516
2010	-5.258535247424629
2011	-2.853801914081647
2012	-0.21987005119825162
2013	-0.327559347997141
2014	-0.45532235749716443
2015	-0.569959060973776
2016	-0.6480517244209825
2017	-0.69964873877015
2018	-0.7436264271695396
2019	-0.7929288266550061
2020	-0.44715343454564593
2021	-0.11430079936114199
2022	0.2416362136115339
2023	0.5950054741894467