Year	annual %
1961	2.41818627068738
1962	2.45105620219308
1963	2.48297218084744
1964	2.49151555735658
1965	2.47122100766677
1966	2.43389224508073
1967	2.38161722032014
1968	2.3296017507818
1969	2.28633094524132
1970	2.25307704952318
1971	2.25722370361439
1972	2.31615969154097
1973	2.41563204275992
1974	2.48221486908098
1975	2.48325844586308
1976	2.47261785940935
1977	2.47768951602882
1978	2.49078102941525
1979	2.53381967832998
1980	2.61590181727674
1981	2.70391825388901
1982	2.75557004282023
1983	2.77799938113618
1984	2.79073282503148
1985	2.79956735164742
1986	2.80374356590874
1987	2.79399664348368
1988	2.77955998443266
1989	2.74144334017898
1990	2.69430763811258
1991	2.64506666653922
1992	2.58284086619382
1993	2.51999511470782
1994	2.45689244074662
1995	2.38748339210323
1996	2.31317634560577
1997	2.23796594380678
1998	2.1590415377905
1999	2.06213058619071
2000	1.92694524157704
2001	1.69755299380957
2002	1.42830817376899
2003	1.25459291928333
2004	1.17127562545308
2005	1.11178740173656
2006	1.04976165973902
2007	0.997237882485964
2008	0.979118914218707
2009	1.01212367069034
2010	1.15140184845157
2011	1.29733854365491
2012	1.34923843816846
2013	1.38035856649557
2014	1.40654396942745
2015	1.4220035710818
2016	1.42498352233719
2017	1.40691381584073
2018	1.37397022115058
2019	1.33657480808218
2020	1.34872957032065
2021	1.27761600231743
2022	1.14124498151162
2023	1.18427440537002