| 2005 | 2008 | 2009 | 2010 | 2011 | 2012 | |
|---|---|---|---|---|---|---|
| Total number | 177 | 173 | 158 | 162 | 145 | 136 |
| by class of inland waterways | ||||||
| class I to IV | 177 | 173 | 158 | 162 | 145 | 136 |
| by year of construction | ||||||
| up to 1949 | 1 | 1 | 1 | 1 | 1 | 1 |
| 1950 - 1969 | 42 | 33 | 30 | 29 | 27 | 24 |
| 1970 - 1979 | 26 | 32 | 31 | 30 | 26 | 25 |
| 1980 - 1989 | 91 | 90 | 80 | 83 | 75 | 72 |
| 1990 - 1999 | 17 | 17 | 16 | 12 | 11 | 9 |
| 2000 - 2009 | 0 | 0 | 0 | 7 | 5 | 5 |
| Total registered tonnes (thous. tonnes) | 94.67 | 86.45 | 75.92 | 73.00 | 66.84 | 64.00 |
| by class of inland waterways | ||||||
| class I to IV | 94.67 | 86.45 | 75.92 | 73.00 | 66.84 | 64.00 |
| by year of construction | ||||||
| up to 1949 | 0.03 | 0.03 | 0.03 | 0.00 | 0.03 | 0.00 |
| 1950 - 1969 | 13.55 | 10.05 | 8.28 | 9.00 | 9.07 | 7.00 |
| 1970 - 1979 | 10.64 | 11.03 | 10.98 | 11.00 | 8.46 | 8.00 |
| 1980 - 1989 | 62.67 | 58.33 | 50.99 | 47.00 | 42.46 | 44.00 |
| 1990 - 1999 | 7.78 | 7.01 | 5.64 | 6.00 | 5.14 | 3.00 |
| 2000 - 2009 | 0.00 | 0.00 | 0.00 | 0.00 | 1.69 | 2.00 |
Source : SPS