In spite of 30 inches of above average annual rainfall, the project was completed on time and 10 % under budget. (emergentcontech.com)
Rain forests Average annual rainfall varies from about 70 to 100 inches Average 80 degrees F for high temp. (slideplayer.com)
(I find this way of stating the trend a bit difficult to understand, but it seems to equate to a decline in average annual rainfall of at least 5 mm each year for the 36 years. (ramblingsdc.net)