Annual Rainfall Trend 1958 onwards:
The late 1950's and early 1960's were wet but thereafter rainfall had been pretty steady. 2002 was a very wet year. After 2005, annual rainfall increased steadily, with 2009 being the wettest year since records commenced in 1958. 2012 saw annual rainfall return to near normal values, and the dry year of 2013 has been followed by another wet year, 2014. Despite a drier than normal first ten months, 2015 still ended up a little above average, after a very wet December.
2016 was a very dry year. Driest since 1976. The moving average is dropping slowly since reaching a peak around 2010.