Year	annual %
1971	0.6331929135799754
1972	-1.2232846998927585
1973	8.686778088241567
1974	3.363716157664996
1975	5.363243566522627
1976	5.026705874515699
1977	4.920525949715085
1978	4.154982038499185
1979	6.206482102603061
1980	12.392568100508925
1981	7.780339492779277
1982	3.441691466916936
1983	-0.3054841323587709
1984	-0.176647557112787
1985	0.6365135837475009
1986	3.517705899222449
1987	3.051469898154039
1988	1.8595613188318083
1989	2.1470383787649325
1990	3.151049837950964
1991	3.3508738747932227
1992	3.554418424168489
1993	2.854505918411874
1994	3.561744069450185
1995	8.998617672241878
1996	1.0853222076756595
1997	0.9542354817592553
1998	1.2184147028853118
1999	0.7656247707375883
2000	-9.380152840880612
2001	4.416524875497402
2002	2.7257425856219726
2003	1.871584706534236
2004	2.1131729996660624
2005	1.9374794824564816
2006	2.1601242307134783
2007	2.2840004949121777
2008	3.2300884548291435
2009	2.0208547158216277
2010	3.1656946955337446
2011	1.123901628450767
2012	2.146096985311118
2013	2.276171307765921
2014	2.342729170254003
2015	4.220118216963272
2016	1.9970175167178752
2017	2.136784357409141
2018	1.7327977684799265
2019	2.3128231352431925
2020	1.6839306363375215
2021	2.005254734583417
2022	5.261552106196049
2023	5.2736022516379535