Year	annual %
1961	2.67750780003869
1962	2.44696001938284
1963	2.19182647239121
1964	2.24113327435576
1965	2.57084686962757
1966	2.80880785102243
1967	3.01560768660481
1968	3.12164160228976
1969	3.11505640418176
1970	3.08818394838363
1971	3.00931354381668
1972	2.94896268963442
1973	2.95206833272967
1974	2.93537515995271
1975	2.9070836928786
1976	2.89089391293466
1977	2.86390960667022
1978	2.85847530507977
1979	3.04977646065132
1980	3.35547032700799
1981	3.63825218024574
1982	3.80282951759302
1983	3.5877838789899
1984	3.3123358772293
1985	3.40883127197502
1986	3.62060755685165
1987	3.59766169671716
1988	3.18725478939529
1989	2.66757702027772
1990	2.4615927974137
1991	2.23868589939967
1992	2.26554307510296
1993	3.18151530970022
1994	-16.0491526157981
1995	-16.8806296708643
1996	16.6255019779963
1997	13.2470672505578
1998	3.18243918155598
1999	1.19243584222433
2000	1.24573125745531
2001	1.39530227863448
2002	1.78798197593577
2003	2.31040451162765
2004	2.57920977781251
2005	2.63169301631945
2006	2.66480719140037
2007	2.6937067262308
2008	2.68159866469225
2009	2.64057029628242
2010	2.6071051025344
2011	2.56550960901795
2012	2.45984040638473
2013	2.3792915199656
2014	2.3775340228914
2015	2.38595568459796
2016	2.44299698959529
2017	2.47880785239257
2018	2.43503841544025
2019	2.39079436618151
2020	2.3967070500013
2021	2.3717515483557
2022	2.31160323907511
2023	2.28190198384881