Year	annual %
1961	1.1680708840180074
1962	3.548665921621179
1963	4.759222692906377
1964	7.678796824007875
1965	5.923036744896677
1966	5.029819324791987
1967	3.1896518372805076
1968	6.029886569759839
1969	8.046443601753168
1970	7.776299082959625
1971	6.151966646497158
1972	5.985530350298006
1973	6.6570162858646995
1974	5.967531566265265
1975	3.999470980076609
1976	6.19793437407732
1977	4.573857468295046
1978	3.734527015943385
1979	4.658665813448565
1980	4.8775648715703
1981	1.8606395035844798
1982	2.5160815140445436
1983	1.4103919271935723
1984	4.539900433213546
1985	4.420247885291602
1986	3.7534246199213186
1987	4.7375799157023835
1988	4.104809357193616
1989	3.0949593353104348
1990	2.123391199945928
1991	1.2053035509496794
1992	1.6141309054443127
1993	3.4523524532674656
1994	3.381009140476138
1995	3.951255288589266
1996	5.423753641737221
1997	5.218065906565812
1998	2.728615024910596
1999	3.6745082226162964
2000	5.7247153723131845
2001	3.6571849736535995
2002	4.646775037968752
2003	5.8547206103265665
2004	7.556955790326427
2005	7.100965803348032
2006	8.112408502173167
2007	8.702055557059182
2008	5.835855095407979
2009	2.969739265881472
2010	7.6831010647310904
2011	6.203461966447037
2012	5.284632252465428
2013	5.22325358422691
2014	4.84630868421317
2015	4.326753430245759
2016	4.454964519445895
2017	5.142418420094856
2018	4.890014520392711
2019	3.9791190559074465
2020	-1.3554350114230118
2021	7.386659264751501
2022	3.6535460614943247
2023	4.3632211950150435