Year	Percent
1978	89.62188
1979	91.80743
1983	95.10549
1984	86.86192
1999	90.60452
2002	87.9257
2003	99.75748
2005	101.50442
2007	98.04287
2008	106.02294
2009	113.13725
2010	103.31658
2016	61.02684