Year	annual %
1961	2.47218570595133
1962	2.50812688252628
1963	2.54063933342381
1964	2.57054280877405
1965	2.59857351872816
1966	2.61831386165055
1967	2.63546367023201
1968	2.66113837008697
1969	2.66343834241463
1970	2.59896468109893
1971	2.53143364190133
1972	2.56849894141112
1973	2.67990390392211
1974	2.8178162778151
1975	2.922199270895
1976	3.09975431451856
1977	3.30139327889042
1978	3.38441855715898
1979	3.42076557974632
1980	3.43136564624015
1981	3.43212899936186
1982	3.42378237174167
1983	3.41552657412919
1984	3.4046617005856
1985	3.3925439742175
1986	3.32450318674489
1987	3.19724741732398
1988	3.09392231420842
1989	3.0430367091376
1990	3.00963173855987
1991	2.97261157298081
1992	2.94001714344113
1993	2.91423799736402
1994	2.90004472934947
1995	2.88896302293146
1996	2.85862109614102
1997	2.80461073747403
1998	2.75602860829703
1999	2.67948065791714
2000	2.53167345846883
2001	2.39380068808573
2002	2.3262995615241
2003	2.29314328165436
2004	2.26568934347868
2005	2.24285314785611
2006	2.24291000270575
2007	2.2422684243981
2008	2.23050143791026
2009	2.26712423337321
2010	2.35185573397427
2011	2.43624466471624
2012	2.50431283407337
2013	2.5393320797232
2014	2.54476579755385
2015	2.52650758971794
2016	2.48924408661005
2017	2.44276679046656
2018	2.39710667907408
2019	2.36010120913781
2020	2.3713876123354
2021	2.3817422996453
2022	2.29347735670131
2023	2.20546019496427