user
Instruction
Answer the question based on the provided table.


Table
Table Title: profile of economic regions of residence with relatively low and relatively high layoff rates, averages of 2003 to 2013
Table Content:
<table border="1" cellspacing="0">
<tr> <td rowspan="3">  </td> <td colspan="3"> tercile </td> </tr>
<tr> <td> lower </td> <td> middle </td> <td> upper </td> </tr>
<tr> <td colspan="3"> number </td> </tr>
<tr> <td> economic regions </td> <td> 23 </td> <td> 23 </td> <td> 23 </td> </tr>
<tr> <td>  </td> <td colspan="3"> thousands </td> </tr>
<tr> <td> average number of employees aged 18 to 64 </td> <td> 360 </td> <td> 171 </td> <td> 59 </td> </tr>
<tr> <td>  </td> <td colspan="3"> percent </td> </tr>
<tr> <td> layoff rate </td> <td> 4.7 </td> <td> 6.8 </td> <td> 12.6 </td> </tr>
<tr> <td> hiring rate </td> <td> 19.9 </td> <td> 21.1 </td> <td> 23.8 </td> </tr>
<tr> <td> percentage of employees </td> <td colspan="3">  </td> </tr>
<tr> <td> with 24 months of tenure or less </td> <td> 32.9 </td> <td> 32.1 </td> <td> 33.9 </td> </tr>
<tr> <td> aged 18 to 34 years </td> <td> 38.7 </td> <td> 37.5 </td> <td> 33.9 </td> </tr>
<tr> <td> aged 50 to 64 years </td> <td> 24.2 </td> <td> 25.0 </td> <td> 27.2 </td> </tr>
<tr> <td> in agriculture, fishing, forestry and hunting </td> <td> 1.7 </td> <td> 1.8 </td> <td> 3.4 </td> </tr>
<tr> <td> in accommodation and food services </td> <td> 5.9 </td> <td> 6.1 </td> <td> 6.6 </td> </tr>
<tr> <td> in construction </td> <td> 5.5 </td> <td> 6.2 </td> <td> 6.1 </td> </tr>
<tr> <td> in manufacturing </td> <td> 12.1 </td> <td> 12.4 </td> <td> 11.7 </td> </tr>
<tr> <td> in small firms </td> <td> 19.7 </td> <td> 20.4 </td> <td> 24.5 </td> </tr>
<tr> <td> in large firms </td> <td> 49.0 </td> <td> 48.6 </td> <td> 44.2 </td> </tr>
<tr> <td> in full-time jobs </td> <td> 84.4 </td> <td> 84.6 </td> <td> 84.7 </td> </tr>
<tr> <td> in temporary jobs </td> <td> 11.1 </td> <td> 12.3 </td> <td> 18.0 </td> </tr>
<tr> <td> in term or contract jobs </td> <td> 5.7 </td> <td> 6.0 </td> <td> 7.0 </td> </tr>
<tr> <td> in seasonal jobs </td> <td> 2.6 </td> <td> 3.3 </td> <td> 6.8 </td> </tr>
<tr> <td>  </td> <td colspan="3"> 2014 dollars </td> </tr>
<tr> <td> earnings and employment insurance benefits of employees </td> <td colspan="3">  </td> </tr>
<tr> <td> average annual wages per job held by employees </td> <td> 31,773 </td> <td> 29,931 </td> <td> 26,023 </td> </tr>
<tr> <td> average annual wages per employee </td> <td> 45,260 </td> <td> 43,064 </td> <td> 37,602 </td> </tr>
<tr> <td> average employment insurance income received by employees </td> <td> 790 </td> <td> 1,117 </td> <td> 2,167 </td> </tr>
</table>


Question
how many ers were sorted on the basis of the average annual layoff rate over the 2003-to-2013 period and grouped into those in the upper-, middle- and bottom-third of the layoff rate distribution.


Answer Format
The final answer should be concise and use the following format:
```json
{
    "answer": [
        "answer1",
        "answer2",
        ...
    ]
}
```
rule
["69"]