  | 
| Mean Wage History | 
| Year | This Occupation | Compared to Occupational Group | Difference | 
| Current | $13.18 |   | $19.17 | 
  | -$5.99 | 
| 2015 | $12.76 | +3.3% | $18.56 | 
+3.3% | -$5.80 | 
| 2014 | $12.47 | +2.3% | $18.14 | 
+2.3% | -$5.66 | 
| 2013 | $12.24 | +1.9% | $17.80 | 
+1.9% | -$5.56 | 
| 2012 | $12.03 | +1.7% | $17.50 | 
+1.7% | -$5.46 | 
| 2011 | $11.84 | +1.6% | $17.22 | 
+1.6% | -$5.38 | 
| 2010 | $11.71 | +1.1% | $17.03 | 
+1.1% | -$5.32 | 
| 2009 | $11.51 | +1.8% | $16.74 | 
+1.8% | -$5.23 | 
| 2008 | $11.21 | +2.7% | $16.30 | 
+2.7% | -$5.09 | 
| 2007 | $10.95 | +2.3% | $15.93 | 
+2.3% | -$4.97 | 
| Year | This Occupation | Compared to All Occupations | Difference | 
| Current | $13.18 |   | $23.35 | 
  | -$10.17 | 
| 2015 | $12.76 | +3.3% | $22.70 | 
+2.9% | -$9.93 | 
| 2014 | $12.47 | +2.3% | $22.21 | 
+2.2% | -$9.73 | 
| 2013 | $12.24 | +1.9% | $21.76 | 
+2.1% | -$9.52 | 
| 2012 | $12.03 | +1.7% | $21.39 | 
+1.7% | -$9.35 | 
| 2011 | $11.84 | +1.6% | $21.05 | 
+1.6% | -$9.21 | 
| 2010 | $11.71 | +1.1% | $20.70 | 
+1.7% | -$8.98 | 
| 2009 | $11.51 | +1.8% | $20.42 | 
+1.4% | -$8.91 | 
| 2008 | $11.21 | +2.7% | $19.90 | 
+2.6% | -$8.68 | 
| 2007 | $10.95 | +2.3% | $19.26 | 
+3.3% | -$8.31 | 
  | 
| Reference Date: 1st Quarter 2016 |