Year	annual %
1961	3.4793766252336087
1962	3.5144640078641225
1963	3.548526941104276
1964	3.5643534775780106
1965	3.583165474290092
1966	3.5903418620385
1967	3.5205716503912257
1968	3.5067980474323592
1969	3.5424310248714805
1970	3.599311829745095
1971	4.43449985463897
1972	4.492755208800796
1973	4.580489961904689
1974	4.716716310396336
1975	4.861961068798518
1976	4.960367063391183
1977	5.05394976856492
1978	5.123219630855658
1979	5.122812608468118
1980	5.142521180743718
1981	6.1438574574842315
1982	6.01879701372628
1983	5.5914321069339055
1984	5.533773664004431
1985	5.747520175794574
1986	5.613625342120489
1987	5.542468566718222
1988	5.520350243685588
1989	5.508623640209167
1990	5.492673052247342
1991	4.219550949148553
1992	4.1703571045618055
1993	4.188547606442232
1994	4.194002446071721
1995	4.166090396498815
1996	4.128611513212343
1997	4.105487140333286
1998	4.085747482061505
1999	4.10264989082065
2000	4.153285964816426
2001	5.002847876152023
2002	5.007834089313912
2003	4.98898112302915
2004	4.96110976626493
2005	4.924461650641669
2006	4.895541303155582
2007	4.879047970434169
2008	4.859830828083993
2009	4.829727086908916
2010	4.817232665458607
2011	4.781297732482682
2012	4.713374584993446
2013	4.606379878809641
2014	4.4842460335748004
2015	4.346763548978705
2016	4.257992685299548
2017	4.229970858541508
2018	4.148946367897024
2019	4.0501895683176965
2020	3.994245223764459
2021	3.9115876337246176
2022	3.838622955022507
2023	3.7935882296412315