Efficiency Ratio Over Time
Efficiency Ratio Principal Bank
12-31-2016 24.614
09-30-2016 25.266
06-30-2016 25.402
03-31-2016 25.113
12-31-2015 27.053
09-30-2015 27.398
06-30-2015 26.54
03-31-2015 31.238
12-31-2014 33.306
09-30-2014 33.726
06-30-2014 31.308
03-31-2014 33.107
12-31-2013 33.111
09-30-2013 33.431
06-30-2013 35.344
03-31-2013 34.503
12-31-2012 34.999
09-30-2012 34.504
06-30-2012 32.553
03-31-2012 32.591