Region |-----------1959 - 1988 trends----------| Trend N ( 95% CI ) Sign. Rel. Abu. ARI 6.2 30 0.5 11.8 ** 3.41 CAL -0.7 84 -2.5 1.2 3.63 TEX 7.2 16 1.1 13.2 ** 2.10 SUR 0.7 140 -1.3 2.7 2.88