Year	annual %
1961	2.32632706926711
1962	3.06988569607914
1963	3.25590943317182
1964	3.24550816654424
1965	3.24428371517101
1966	3.25657209867963
1967	3.27977518109747
1968	3.30561210954571
1969	3.32772724417013
1970	3.08904597162592
1971	2.14999835849578
1972	1.12244814563743
1973	0.79630090794537
1974	0.829131703536244
1975	0.888701136749221
1976	0.863611249158857
1977	0.77027784958999
1978	0.739367759561052
1979	0.738399979463989
1980	1.02626096959612
1981	1.37745811991792
1982	1.44611774182867
1983	1.41553277177226
1984	1.35107180274052
1985	1.30334844169751
1986	1.2854177236733
1987	1.28344347264534
1988	1.28643231956249
1989	1.38239972115257
1990	1.77474829593989
1991	2.2130774464263
1992	2.44517050411919
1993	2.53394730591853
1994	2.49721826071599
1995	2.39287120315999
1996	2.31272373992786
1997	2.26555228546592
1998	2.19559888350156
1999	2.11573778449194
2000	1.89987187752495
2001	1.66784323760593
2002	1.54881400616773
2003	1.43878620109395
2004	1.34359900654352
2005	1.27507062329957
2006	1.22154041180103
2007	1.16559727886391
2008	1.10397557326972
2009	1.03356365735023
2010	1.07518998845602
2011	1.20318062074503
2012	1.19524498910285
2013	1.13168973985358
2014	1.13001379235817
2015	1.1090565508692
2016	1.12160806985756
2017	1.16795054980192
2018	1.09986005170242
2019	1.01513458042928
2020	0.96752416855618
2021	0.90298888332359
2022	0.884624344860865
2023	0.928494014669758