Region |-----------1959 - 1988 trends----------| Trend N ( 95% CI ) Sign. Rel. Abu. ARI 1.1 19 -0.3 2.6 0.13 CAL 0.9 65 -0.4 2.2 0.07 TEX -0.1 27 -1.0 0.9 0.03 SUR 0.8 135 -0.3 1.8 0.04