Year	annual %
1961	3.9936853189258685
1962	4.0553502103552885
1963	3.8972809999509925
1964	3.751073321659907
1965	3.7113634507596407
1966	4.040004549310826
1967	4.413142942162224
1968	4.479646469416507
1969	4.045124340796795
1970	3.8099846232270385
1971	3.820174222566249
1972	3.751819214586977
1973	3.824828826592905
1974	5.8045982154144244
1975	7.513788657461327
1976	7.497655554890094
1977	7.447069256072138
1978	7.320956676275603
1979	6.365570703435938
1980	5.206960330614142
1981	4.6184865257668655
1982	4.295636110124675
1983	4.080612767482176
1984	3.9206066610963526
1985	4.370322973979498
1986	5.5560377914346715
1987	5.452083887841711
1988	5.497567407256438
1989	5.295610135064196
1990	5.082813548511373
1991	5.091819055977273
1992	2.984547540150917
1993	1.471696908069294
1994	1.3783315778300882
1995	1.2173440701096268
1996	1.1792589489823624
1997	1.1191536722063586
1998	0.9461245146649536
1999	0.9827527386317352
2000	0.860512556286972
2001	0.7189426608438745
2002	0.7582551940814033
2003	2.3277291642984332
2004	3.3930492722770453
2005	3.301992102179578
2006	3.216096614228187
2007	3.1730268815094305
2008	3.167728079583252
2009	3.231357564170704
2010	3.2167287007077188
2011	3.233773946451631
2012	3.22980784445003
2013	2.324008753421727
2014	1.4938559113311352
2015	1.3949389241509333
2016	1.2846177575588134
2017	1.2233030297505803
2018	1.7262333413371762
2019	2.1600372795370677
2020	2.2838560463050084
2021	2.412107185942331
2022	2.085823012040979
2023	1.8314795734374514