Year	annual %
1961	1.3501538964218156
1962	1.244634712001286
1963	1.2708014329693356
1964	1.5039396790116086
1965	1.9198258112473496
1966	2.898778534683373
1967	3.480335621725004
1968	4.367188240536819
1969	4.958488449574787
1970	5.262728475668737
1971	5.06980750726423
1972	5.826044108793354
1973	9.92880660941735
1974	14.983947729100478
1975	9.262790663152714
1976	5.503491912795937
1977	6.717535077419427
1978	6.82659461471485
1979	8.29672198172402
1980	9.854087069832246
1981	10.870957344293572
1982	8.827078400984504
1983	5.824475049587207
1984	3.6078793128998257
1985	3.3383891899150626
1986	3.132379040933671
1987	4.791601413669213
1988	4.539998176338116
1989	4.681253240029719
1990	3.7433290993795794
1991	3.381811336110303
1992	2.2788543459214736
1993	2.370324836398936
1994	1.9595679677018296
1995	2.2633257316071678
1996	1.830764559334554
1997	1.72444795356148
1998	1.123865624955343
1999	1.9238556417362673
2000	2.2651951766986116
2001	1.5736767667921043
2002	1.5539946596134513
2003	2.8247395206592216
2004	3.260873898289816
2005	3.135454556746552
2006	3.0838367335286563
2007	3.3005456442315477
2008	3.996316455425756
2009	0.6167807151257705
2010	2.2362220025570707
2011	2.0631094754314887
2012	1.8621649281276973
2013	1.7018803606723338
2014	1.9411989774866782
2015	0.9280427947577294
2016	0.950322479212474
2017	1.7908032845466835
2018	1.6511181981861967
2019	1.6785078743474742
2020	1.0708102680749647
2021	4.5847453588969955
2022	7.041025943302358
2023	2.6251185297469704