Year	annual %
1961	1.82097820121554
1962	1.90127126860529
1963	1.97256033597167
1964	2.04039463514485
1965	2.10948078580651
1966	2.18171452502621
1967	2.24869327186042
1968	2.22905209340205
1969	1.11043746254383
1970	-0.594841963405998
1971	-1.59104781445323
1972	-2.13513717582582
1973	-2.4236700395909
1974	-2.54580455366087
1975	-2.54309477170107
1976	-2.59713986951662
1977	-1.68918676702182
1978	-0.188476439998431
1979	1.12301126445093
1980	3.085606219465
1981	4.98533659757622
1982	6.13584827995516
1983	6.44007404983837
1984	6.11960220629166
1985	5.53773189862433
1986	4.87349144346386
1987	4.30904855070262
1988	3.97473736977916
1989	3.82611807879043
1990	3.74870610989136
1991	3.70932519682329
1992	3.69619393245534
1993	3.70100091442781
1994	3.72717698614614
1995	3.77030153485104
1996	3.81971594938607
1997	3.87156637714605
1998	3.91273447548594
1999	3.93820014618561
2000	4.47057515918696
2001	4.88515477320107
2002	4.73080674836867
2003	4.60841901726829
2004	4.53953968288754
2005	4.5388230472664
2006	4.59840217738441
2007	4.68160680952619
2008	4.75008073899975
2009	4.78003659146047
2010	4.75608876236201
2011	4.4725181364733
2012	4.19593639444133
2013	4.12804546690893
2014	4.0367432369581
2015	3.92078547747936
2016	3.78456615093479
2017	3.63365484265393
2018	3.48160747723884
2019	3.33503679402461
2020	2.73226949782894
2021	2.37849451867221
2022	2.44420928980061
2023	2.34629870847474