Year	annual %
1980	12.98817228297255
1981	25.564553295147803
1982	39.47671979865772
1983	14.247584677267772
1984	17.676285742489554
1985	22.092665604115986
1986	26.701630633931845
1987	34.0545523561629
1988	63.287623208338395
1989	509.4872790031297
1990	164.87129496276165
1991	37.89981431940132
1992	55.67305908972885
1993	35.9925085601138
1994	38.0774163705557
1995	35.61922309695299
1996	31.216528243274855
1997	29.056516527031928
1998	25.176937006018363
1999	19.588626746397495
2000	11.556924311768654
2001	14.612955373193595
2002	-1.9970745659940854
2003	5.369490001945973
2004	3.7879391364512482
2005	15.04322999434374
2006	15.964328609457274
2007	13.388840882844613
2008	18.62562853439312
2009	8.105308977380183
2010	8.8052427696708
2011	12.486473518722692
2012	4.527973971580197
2013	6.239445546617583
2014	8.184161249888906
2015	9.062074487874616
2016	9.566168277218704
2017	4.653904660305419
2018	9.164741850647365
2019	8.264049513606835
2020	16.42930934353679
2021	8.91363801981589
2022	5.247237023482278
2023	8.53815575567602