Year | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | Total |
All Sample | 1092 | 1186 | 1209 | 1249 | 1327 | 1394 | 7457 |
Private Companies | 269 | 340 | 356 | 417 | 496 | 535 | 2413 |
Local Governments Controlled Companies | 623 | 640 | 625 | 590 | 576 | 581 | 3635 |
Central Government Controlled Companies | 200 | 206 | 228 | 242 | 255 | 278 | 1409 |