Year	annual %
1961	2.74673947006107
1962	2.67330621970689
1963	2.72045162390331
1964	2.76197073383996
1965	2.68773177637466
1966	3.26115855887608
1967	3.15815720502988
1968	3.0614635819607
1969	4.42332549768257
1970	7.41079721537218
1971	6.89928714869514
1972	4.48140157897926
1973	2.36231457634359
1974	1.9268418865877
1975	1.13853222251254
1976	1.12571545246345
1977	1.48150857851407
1978	1.09690313705739
1979	0.724640852076725
1980	1.11291760787245
1981	1.83945759533913
1982	2.11556355416499
1983	2.03811402649502
1984	1.96443806684808
1985	1.82951852300004
1986	1.86022041458252
1987	1.98213190596546
1988	1.9436058377119
1989	1.96528464253134
1990	2.36898913568499
1991	2.57796700747493
1992	2.498715148269
1993	2.57882227419684
1994	2.66662501748002
1995	2.26152221847957
1996	1.91533270926652
1997	1.9319768189133
1998	1.89876787901388
1999	1.89876220974421
2000	1.90137437804069
2001	1.9017932212971
2002	1.89881141880703
2003	1.70376514357719
2004	1.52146109806749
2005	1.51846735383173
2006	1.49575438196191
2007	1.47371088194967
2008	1.45230768383707
2009	1.30961560699145
2010	1.53321542873142
2011	1.82508537401111
2012	1.81167904307637
2013	1.77944042769409
2014	1.65510642970682
2015	0.524642605415484
2016	0.281648570411144
2017	0.218102594636015
2018	0.1328462500256
2019	0.0258107337212034
2020	-0.0590057547729274
2021	-0.254861903148414
2022	-0.435504436440432
2023	-0.47472420231839