| Industrial group |
1998 |
1999 |
2000 |
2001 |
2002 |
2003 |
2004 |
2005 |
2006 |
2007 |
| Agriculture,forestry and fishing |
- |
1 |
- |
- |
- |
- |
- |
1 |
- |
- |
| Mining and quarrying |
1 |
- |
1 |
- |
- |
- |
1 |
1 |
- |
- |
| Manufacturing |
9 |
4 |
11 |
9 |
5 |
5 |
2 |
2 |
3 |
2 |
| Electricit,gas and water supply |
1 |
2 |
- |
- |
- |
- |
- |
1 |
- |
- |
| Construction |
2 |
4 |
2 |
2 |
1 |
1 |
- |
3 |
2 |
- |
| Wholesale and retail trade |
4 |
1 |
2 |
1 |
2 |
1 |
1 |
2 |
- |
1 |
| Hotels and restaurants |
- |
1 |
1 |
- |
1 |
- |
- |
- |
- |
- |
| Transport,storage and communication |
4 |
6 |
12 |
10 |
4 |
5 |
3 |
3 |
1 |
2 |
| Financial and other business services |
1 |
1 |
- |
- |
- |
1 |
2 |
- |
1 |
- |
| Public administration and defence |
4 |
1 |
5 |
- |
1 |
2 |
1 |
1 |
1 |
1 |
| Education |
2 |
4 |
3 |
1 |
3 |
3 |
- |
- |
- |
- |
| Health and social work |
4 |
7 |
2 |
3 |
7 |
3 |
- |
- |
2 |
- |
| Other services |
2 |
- |
- |
- |
3 |
3 |
1 |
1 |
- |
- |
|
|
| Total |
34 |
32 |
39 |
26 |
27 |
24 |
11 |
15 |
10 |
6 |