A main line is a telephone line connecting the subscriber's terminal equipment to the public switched network and which has a dedicated port in the telephone exchange equipment. This term is synonymous with the term main station or Direct Exchange Line.
| Date | Value | Change, % |
|---|---|---|
| 2014 | 24.3 | 0.39% |
| 2013 | 24.2 | -2.06% |
| 2012 | 24.7 | 30.04% |
| 2011 | 19.0 | -1.18% |
| 2010 | 19.2 | -4.44% |
| 2009 | 20.1 | -3.78% |
| 2008 | 20.9 | -14.16% |
| 2007 | 24.3 | -11.15% |
| 2006 | 27.4 | 9.96% |
| 2005 | 24.9 | 27.91% |
| 2004 | 19.5 | 5.33% |
| 2003 | 18.5 |
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