Year,System,n,GeomeanIndex,95% CI (low),95% CI (high) 1990,HEAD OF BAY,42,2.2,1.41,3.24 1991,HEAD OF BAY,42,1.99,1.24,3.01 1992,HEAD OF BAY,42,0.87,0.54,1.28 1993,HEAD OF BAY,42,15,11.11,20.14 1994,HEAD OF BAY,42,12.88,9.01,18.25 1995,HEAD OF BAY,42,2.85,1.97,3.99 1996,HEAD OF BAY,42,15,10.47,21.32 1997,HEAD OF BAY,42,6.15,4.66,8.04 1998,HEAD OF BAY,42,4.32,2.79,6.47 1999,HEAD OF BAY,42,1.91,1.27,2.74 2000,HEAD OF BAY,42,8.84,6.43,12.04 2001,HEAD OF BAY,42,7.15,4.68,10.71 2002,HEAD OF BAY,42,1.35,0.75,2.15 2003,HEAD OF BAY,42,11.89,7.51,18.53 2004,HEAD OF BAY,42,4.17,2.75,6.13 2005,HEAD OF BAY,42,8.48,5.98,11.87 2006,HEAD OF BAY,42,0.95,0.57,1.42 2007,HEAD OF BAY,42,8.21,5.19,12.71 2008,HEAD OF BAY,42,2.33,1.33,3.76 2009,HEAD OF BAY,42,2.85,1.75,4.39 2010,HEAD OF BAY,42,2.9,1.77,4.5 2011,HEAD OF BAY,42,5.79,4.04,8.15 2012,HEAD OF BAY,42,0.44,0.23,0.68 2013,HEAD OF BAY,42,3.29,2.27,4.62 2014,HEAD OF BAY,42,8.02,5.43,11.66 2015,HEAD OF BAY,42,7.2,5.41,9.49 2016,HEAD OF BAY,42,1.14,0.68,1.73 2017,HEAD OF BAY,42,18.52,13.87,24.62 2018,HEAD OF BAY,42,14.48,10.1,20.58