Region |-----------1959 - 1988 trends----------| Trend N ( 95% CI ) Sign. Rel. Abu. ARI -0.4 19 -1.5 0.7 0.05 BC 1.9 26 -1.4 5.3 0.88 CAL -1.0 132 -2.4 0.4 19.53 ORE 0.4 33 -2.0 2.7 11.36 WAS 4.7 31 0.3 9.1 ** 2.54 SUR -0.8 276 -2.2 0.6 4.22