Year	annual %
1961	5.50993917228534
1962	5.44740529121602
1963	5.31635595043551
1964	5.15082312248104
1965	5.00956990591286
1966	4.89115354125692
1967	4.75868905669773
1968	10.9634456430162
1969	17.0399743653847
1970	16.2954748453481
1971	14.4756499611231
1972	13.0068349335734
1973	11.8082029950538
1974	10.8105044017579
1975	9.94474064466588
1976	12.2448504878623
1977	14.0550880972457
1978	13.0295151583775
1979	12.0612859321966
1980	10.9963468210741
1981	8.15235614542674
1982	5.96957863532609
1983	5.7981806452141
1984	5.56008835387875
1985	5.29949316212603
1986	6.26284024064243
1987	7.04566354989878
1988	6.61502192954251
1989	6.22605569049676
1990	5.86903318464931
1991	5.53965639945375
1992	5.23067555863232
1993	4.9348705828098
1994	4.64639135932791
1995	4.40817686960834
1996	5.54384709828192
1997	6.52191067880396
1998	6.17818855537547
1999	5.86451455757029
2000	5.58038700101525
2001	5.31707596147158
2002	5.06487258360989
2003	4.82934268529322
2004	4.609526743863
2005	6.95572689795874
2006	13.4836720911499
2007	18.1279839755253
2008	17.3990859957442
2009	13.4229206026704
2010	5.93976536580988
2011	1.09556271332912
2012	1.04134460783085
2013	0.997641825826328
2014	0.956397623844095
2015	0.911950036242349
2016	0.863868922846647
2017	0.819744473334198
2018	0.789450107726376
2019	0.779087177439076
2020	0.817694385518168
2021	0.834812788038646
2022	0.808075150558113
2023	0.799054784290549