Year	annual %
1961	3.582831001157072
1962	3.7267220632334848
1963	3.83640984880925
1964	3.528681648285677
1965	2.924288938313788
1966	2.897091357827306
1967	2.8991573984581684
1968	2.8914446905709186
1969	2.8596763823582574
1970	2.787614686475633
1971	2.6311356585177594
1972	3.651968122357388
1973	4.554557618153168
1974	4.18718834474604
1975	3.822182899028791
1976	3.472707157321684
1977	3.1072396893890004
1978	2.762839034660892
1979	2.3843693503500263
1980	2.778811866978175
1981	0.31427174907611344
1982	0.4946020219769781
1983	0.6742884081674979
1984	0.9569373998190692
1985	1.2979495688422524
1986	1.4478360121239648
1987	1.2533971876318046
1988	1.4326618941505513
1989	1.6496344140004147
1990	1.1832043380619912
1991	0.8909145499084808
1992	0.959813006873608
1993	0.7902927921009767
1994	1.0953817874126022
1995	1.9570674429633685
1996	2.239498440230138
1997	2.129442850704372
1998	2.0497680730045693
1999	1.9800961954633811
2000	1.9086625222993734
2001	1.8476240217506954
2002	1.7941114211583589
2003	1.733313255916359
2004	1.4484867045073282
2005	1.0178695285441506
2006	1.017390981838477
2007	1.0259317138360462
2008	1.0265010018830825
2009	1.025552275599556
2010	1.0195578166324943
2011	1.002162923568554
2012	0.9719243173307163
2013	0.9376386018505538
2014	0.9345064352479628
2015	0.9619004347516367
2016	1.0092635609147704
2017	1.0460937184520431
2018	1.0709655088564212
2019	1.1561936048339594
2020	1.202014632773007
2021	1.076445723845186
2022	0.9540145691135337
2023	0.9938153984733796