  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $15.76 |   | $19.17 | 
  | -$3.41 | 
| 2015 | $15.26 | +3.3% | $18.56 | 
+3.3% | -$3.30 | 
| 2014 | $14.91 | +2.3% | $18.14 | 
+2.3% | -$3.22 | 
| 2013 | $14.63 | +1.9% | $17.80 | 
+1.9% | -$3.16 | 
| 2012 | $14.39 | +1.7% | $17.50 | 
+1.7% | -$3.11 | 
| 2011 | $14.16 | +1.6% | $17.22 | 
+1.6% | -$3.06 | 
| 2010 | $14.00 | +1.1% | $17.03 | 
+1.1% | -$3.03 | 
| 2009 | $13.76 | +1.8% | $16.74 | 
+1.8% | -$2.97 | 
| 2008 | $13.40 | +2.7% | $16.30 | 
+2.7% | -$2.89 | 
| 2007 | $13.09 | +2.3% | $15.93 | 
+2.3% | -$2.83 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $15.76 |   | $23.35 | 
  | -$7.59 | 
| 2015 | $15.26 | +3.3% | $22.70 | 
+2.9% | -$7.43 | 
| 2014 | $14.91 | +2.3% | $22.21 | 
+2.2% | -$7.29 | 
| 2013 | $14.63 | +1.9% | $21.76 | 
+2.1% | -$7.13 | 
| 2012 | $14.39 | +1.7% | $21.39 | 
+1.7% | -$7.00 | 
| 2011 | $14.16 | +1.6% | $21.05 | 
+1.6% | -$6.89 | 
| 2010 | $14.00 | +1.1% | $20.70 | 
+1.7% | -$6.69 | 
| 2009 | $13.76 | +1.8% | $20.42 | 
+1.4% | -$6.65 | 
| 2008 | $13.40 | +2.7% | $19.90 | 
+2.6% | -$6.49 | 
| 2007 | $13.09 | +2.3% | $19.26 | 
+3.3% | -$6.16 | 
  | 
| Reference Date: 1st Quarter 2016 |