Year	annual %
1961	2.26530955017342
1962	2.26859447687003
1963	2.31519640844347
1964	2.40741623322174
1965	2.55240445918997
1966	2.67909689059928
1967	2.66608575923119
1968	2.58685695326533
1969	2.58145052904383
1970	2.63080655133215
1971	2.68412086809882
1972	2.73188249715004
1973	2.77517862495308
1974	2.86210748718666
1975	2.97006671323142
1976	3.07698150351969
1977	3.16026243147549
1978	3.24871390723701
1979	3.31015092291535
1980	3.30738205289684
1981	2.90543612454621
1982	2.91533293128106
1983	3.26647870987893
1984	3.27128046231584
1985	3.63843067580203
1986	3.87469501655736
1987	3.83155896580793
1988	4.60643292677067
1989	3.89067490400346
1990	3.3407413815376
1991	4.09537405845672
1992	3.90742851310281
1993	3.011593411951
1994	0.0299917996698603
1995	-0.0171969947626994
1996	2.07712069261552
1997	1.74588934803509
1998	1.44539395083494
1999	1.30585667693013
2000	1.18369298761011
2001	1.05218810260185
2002	0.899822293950695
2003	0.757301427499704
2004	0.655855489540335
2005	0.572780084427945
2006	0.544190295359054
2007	0.580366640025196
2008	0.539314000922246
2009	0.459182518639854
2010	0.458720162719754
2011	0.494357533893043
2012	0.547904556093655
2013	0.616659419518733
2014	0.672496411974745
2015	0.7143137221497
2016	0.754508380699921
2017	0.773005801268303
2018	0.781899444165432
2019	0.788402227821078
2020	0.939644435809807
2021	0.9790522575795
2022	0.785236419347899
2023	0.758721181538574