Year	%
1984	54.16731116826465
1985	51.90896664614011
1986	64.18588956022383
1987	89.46782522238261
1988	63.7932181507564
1989	59.79628342855616
1990	68.90652526421454
1991	44.76850469425947
1992	45.80086698510348
1993	51.774468516855094
1994	58.175779218698715
1995	55.98415843921414
1996	59.21381090804272
1997	76.35828489824522
1998	87.90456195003352
1999	93.63469451464412
2000	144.39048781210136
2001	121.8319198872824
2002	119.97822744985127
2003	90.7772147714467
2004	94.63019110266897
2005	108.32223107065445
2006	112.93319007862
2007	146.92953060747334
2008	249.6046776605203
2009	142.87570706612067
2010	129.93340820882779
2011	152.38014389050727
2012	106.79097578744454
2013	98.74143178301354
2014	109.15401856266247
2015	158.79000776314595
2016	101.67945247475888
2017	100.03406842801986