Region |-----------1959 - 1988 trends----------| Trend N ( 95% CI ) Sign. Rel. Abu. BC 18.6 24 -6.2 43.4 49.43 CAL -5.3 41 -14.0 3.3 63.77 WAS 14.0 19 -6.2 34.3 31.85 SUR 3.0 91 -10.8 16.9 46.39