Region |-----------1959 - 1988 trends----------| Trend N ( 95% CI ) Sign. Rel. Abu. ARI -0.2 18 -1.0 0.6 0.07 BC 1.6 25 -0.5 3.7 0.29 CAL 0.4 72 -1.3 2.0 0.14 COL 0.1 17 -0.7 1.0 0.04 MON -0.4 19 -1.9 1.2 0.11 ORE 0.3 38 -0.9 1.4 0.19 WAS 0.1 15 -0.8 1.1 0.28 SUR 0.5 235 -0.6 1.6 0.16