  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $15.34 |   | $19.17 | 
  | -$3.83 | 
| 2015 | $14.85 | +3.3% | $18.56 | 
+3.3% | -$3.70 | 
| 2014 | $14.52 | +2.3% | $18.14 | 
+2.3% | -$3.62 | 
| 2013 | $14.24 | +1.9% | $17.80 | 
+1.9% | -$3.55 | 
| 2012 | $14.01 | +1.7% | $17.50 | 
+1.7% | -$3.49 | 
| 2011 | $13.78 | +1.6% | $17.22 | 
+1.6% | -$3.44 | 
| 2010 | $13.63 | +1.1% | $17.03 | 
+1.1% | -$3.40 | 
| 2009 | $13.39 | +1.8% | $16.74 | 
+1.8% | -$3.34 | 
| 2008 | $13.05 | +2.7% | $16.30 | 
+2.7% | -$3.25 | 
| 2007 | $12.75 | +2.3% | $15.93 | 
+2.3% | -$3.18 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $15.34 |   | $23.35 | 
  | -$8.01 | 
| 2015 | $14.85 | +3.3% | $22.70 | 
+2.9% | -$7.84 | 
| 2014 | $14.52 | +2.3% | $22.21 | 
+2.2% | -$7.69 | 
| 2013 | $14.24 | +1.9% | $21.76 | 
+2.1% | -$7.52 | 
| 2012 | $14.01 | +1.7% | $21.39 | 
+1.7% | -$7.38 | 
| 2011 | $13.78 | +1.6% | $21.05 | 
+1.6% | -$7.27 | 
| 2010 | $13.63 | +1.1% | $20.70 | 
+1.7% | -$7.06 | 
| 2009 | $13.39 | +1.8% | $20.42 | 
+1.4% | -$7.02 | 
| 2008 | $13.05 | +2.7% | $19.90 | 
+2.6% | -$6.85 | 
| 2007 | $12.75 | +2.3% | $19.26 | 
+3.3% | -$6.51 | 
  | 
| Reference Date: 1st Quarter 2016 |