Year	annual %
1971	2.756051852127257
1972	6.001056790902808
1973	5.334178049617179
1974	-1.6853729981325642
1975	-0.1259421784244097
1976	0.5172479970319444
1977	-0.3648099542729426
1978	5.3466604980640255
1979	4.272633953091159
1980	-0.2038515947083539
1981	0.12785122849719244
1982	1.1282658124957692
1983	4.160883730991927
1984	2.1532620565900373
1985	3.649841558539862
1986	6.217291353320206
1987	5.279561468360498
1988	7.518028703684038
1989	3.221133669116554
1990	0.6735789482052326
1991	-2.365593480567398
1992	1.3020480405284047
1993	4.085966914649248
1994	3.25600106892459
1995	1.8939772076691668
1996	3.4692361481263987
1997	5.137470840446312
1998	3.8207210160302196
1999	3.885962163911188
2000	4.304688982790623
2001	2.8251295126158595
2002	2.2205028225923797
2003	2.8798743478185713
2004	2.195688696180923
2005	2.090036553699477
2006	-0.008979510085026732
2007	2.385535795186371
2008	-1.4569742062974171
2009	-3.6183536888842127
2010	1.3566474786877336
2011	-1.107885538754914
2012	1.01986903633005
2013	1.849411671243928
2014	1.959250984256201
2015	2.018461935465112
2016	2.8957894807184914
2017	1.1392588994570474
2018	1.347087428614742
2019	0.5175737022985487
2020	-13.552617691528482
2021	7.527089159344484
2022	3.8015775695987344
2023	-0.5239519843878497