Year	annual %
1961	2.48070392662817
1962	2.50165449660918
1963	2.5043977779367
1964	2.46592768494539
1965	3.231463784328
1966	3.88929312022292
1967	3.46595299849978
1968	3.06416035304629
1969	2.98810948868064
1970	3.02644055833646
1971	3.05486203304082
1972	3.04143479011004
1973	2.97092507897216
1974	2.92407390565473
1975	2.96543869278325
1976	2.98858419068013
1977	2.88999595600605
1978	2.75050881695856
1979	2.71929915257904
1980	2.80511484539877
1981	2.85537258470425
1982	2.8242421467611
1983	2.7221331392925
1984	2.77643635755914
1985	3.19955995737177
1986	3.53073763243808
1987	3.50289000924934
1988	3.32420308817688
1989	3.15898902420899
1990	3.17032426317483
1991	3.14744416366771
1992	2.96487132819489
1993	2.76688282990268
1994	2.55251325831098
1995	2.35390730360802
1996	2.1581187313874
1997	1.9513418452044
1998	1.75232361118204
1999	1.5637011031065
2000	1.56830144656694
2001	1.69071698288354
2002	1.71154334670149
2003	1.67668598570671
2004	1.63811451653174
2005	1.60324404314335
2006	2.37628634213334
2007	3.35435582926146
2008	3.55228895579949
2009	3.54422447127984
2010	3.52915551848168
2011	3.49620875437484
2012	3.43849123867636
2013	3.3466404024458
2014	3.91748340604239
2015	4.42253409157761
2016	4.19690422374828
2017	3.92628779480377
2018	3.59964034794787
2019	2.96723053964137
2020	1.94913457153784
2021	1.35517739152214
2022	0.44582965495802
2023	-0.529476508977336