Region |-----------1959 - 1988 trends----------| Trend N ( 95% CI ) Sign. Rel. Abu. BC 5.0 28 -6.5 16.5 5.67 CAL 4.4 61 0.6 8.2 ** 2.81 ORE 1.9 15 -2.7 6.5 1.15 WAS 6.7 22 1.8 11.7 *** 9.43 SUR 5.5 154 -1.2 12.2 2.10