  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $21.94 |   | $17.54 | 
  | $4.40 | 
| 2015 | $21.24 | +3.3% | $16.98 | 
+3.3% | $4.26 | 
| 2014 | $20.76 | +2.3% | $16.60 | 
+2.3% | $4.16 | 
| 2013 | $20.37 | +1.9% | $16.29 | 
+1.9% | $4.09 | 
| 2012 | $20.03 | +1.7% | $16.01 | 
+1.7% | $4.02 | 
| 2011 | $19.71 | +1.6% | $15.76 | 
+1.6% | $3.95 | 
| 2010 | $19.50 | +1.1% | $15.59 | 
+1.1% | $3.91 | 
| 2009 | $19.16 | +1.8% | $15.32 | 
+1.8% | $3.84 | 
| 2008 | $18.66 | +2.7% | $14.92 | 
+2.7% | $3.74 | 
| 2007 | $18.23 | +2.3% | $14.57 | 
+2.3% | $3.66 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $21.94 |   | $19.32 | 
  | $2.62 | 
| 2015 | $21.24 | +3.3% | $18.78 | 
+2.9% | $2.46 | 
| 2014 | $20.76 | +2.3% | $18.38 | 
+2.2% | $2.38 | 
| 2013 | $20.37 | +1.9% | $18.01 | 
+2.1% | $2.36 | 
| 2012 | $20.03 | +1.7% | $17.70 | 
+1.7% | $2.33 | 
| 2011 | $19.71 | +1.6% | $17.42 | 
+1.6% | $2.29 | 
| 2010 | $19.50 | +1.1% | $17.13 | 
+1.7% | $2.37 | 
| 2009 | $19.16 | +1.8% | $16.90 | 
+1.4% | $2.26 | 
| 2008 | $18.66 | +2.7% | $16.46 | 
+2.6% | $2.19 | 
| 2007 | $18.23 | +2.3% | $15.94 | 
+3.3% | $2.29 | 
  | 
| Reference Date: 1st Quarter 2016 |