Region |-----------1959 - 1988 trends----------| Trend N ( 95% CI ) Sign. Rel. Abu. BC 11.8 32 3.8 19.9 *** 14.43 WAS 13.7 16 6.2 21.2 *** 1.43 SUR 10.4 89 3.4 17.4 *** 3.92