  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $15.95 |   | $15.83 | 
  | $0.12 | 
| 2015 | $15.41 | +3.5% | $15.30 | 
+3.5% | $0.12 | 
| 2014 | $15.07 | +2.3% | $14.96 | 
+2.3% | $0.11 | 
| 2013 | $14.83 | +1.6% | $14.72 | 
+1.6% | $0.11 | 
| 2012 | $14.48 | +2.4% | $14.37 | 
+2.4% | $0.11 | 
| 2011 | $14.31 | +1.2% | $14.20 | 
+1.2% | $0.11 | 
| 2010 | $14.04 | +1.9% | $13.93 | 
+1.9% | $0.11 | 
| 2009 | $13.81 | +1.7% | $13.70 | 
+1.7% | $0.10 | 
| 2008 | $13.44 | +2.8% | $13.34 | 
+2.8% | $0.10 | 
| 2007 | $13.08 | +2.7% | $12.98 | 
+2.7% | $0.10 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $15.95 |   | $19.47 | 
  | -$3.52 | 
| 2015 | $15.41 | +3.5% | $18.93 | 
+2.9% | -$3.51 | 
| 2014 | $15.07 | +2.3% | $18.52 | 
+2.2% | -$3.45 | 
| 2013 | $14.83 | +1.6% | $18.15 | 
+2.1% | -$3.31 | 
| 2012 | $14.48 | +2.4% | $17.84 | 
+1.7% | -$3.35 | 
| 2011 | $14.31 | +1.2% | $17.56 | 
+1.6% | -$3.25 | 
| 2010 | $14.04 | +1.9% | $17.26 | 
+1.7% | -$3.22 | 
| 2009 | $13.81 | +1.7% | $17.03 | 
+1.4% | -$3.21 | 
| 2008 | $13.44 | +2.8% | $16.59 | 
+2.6% | -$3.15 | 
| 2007 | $13.08 | +2.7% | $16.06 | 
+3.3% | -$2.98 | 
  | 
| Reference Date: 1st Quarter 2016 |