Year	annual %
1961	0.932289721233671
1962	4.0404606449882
1963	3.99308165738433
1964	3.93065247603072
1965	3.84698411607771
1966	3.73023952096795
1967	3.58053813632474
1968	3.3962397877598
1969	3.16370700879792
1970	2.81667175011045
1971	1.02512182811861
1972	-0.466599709939696
1973	-0.334738795604706
1974	-0.225400908973568
1975	-0.146095020106937
1976	-0.104542332954152
1977	-0.103840063197711
1978	-0.144988481150256
1979	-0.180208447782143
1980	-0.111215910855949
1981	1.36148508002436
1982	3.16496765440353
1983	3.65700619581212
1984	3.80928961745428
1985	3.93783898171697
1986	4.01660964630165
1987	4.03032467467489
1988	3.98301234684134
1989	3.88617290507145
1990	3.75020493940814
1991	3.41394642886462
1992	2.71670036495701
1993	2.21552001555703
1994	2.0967875007622
1995	2.00205306797107
1996	1.91181669250979
1997	1.81451723891646
1998	1.70412419881796
1999	1.59710795273744
2000	1.4877568229253
2001	1.65924602742688
2002	2.3725582288621
2003	2.8215044674889
2004	2.77099628005097
2005	2.71551761234388
2006	2.67441293965373
2007	2.64802980741037
2008	2.62527907737455
2009	2.60877302924839
2010	2.5950318244663
2011	2.42961521187371
2012	2.0391269983749
2013	1.80391580287387
2014	1.80257581895543
2015	1.81601604156179
2016	1.84379989293183
2017	1.88435643808871
2018	1.92034437176829
2019	1.92636052888412
2020	1.88522049742858
2021	1.51504486448614
2022	1.23914668361251
2023	1.28364385187692