Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Number | Builder | Built | Rebuilt | Name as rebuilt | Scrapped/Sold |
| --- | --- | --- | --- | --- | --- |
| 33.0 | York Rd | Cannot handle non-empty timestamp argument! 1902 | Cannot handle non-empty timestamp argument! 1928 | Binevanagh | Cannot handle non-empty timestamp argument! 1949 |
| 34.0 | York Rd | Cannot handle non-empty timestamp argument! 1901 | Cannot handle non-empty timestamp argument! 1928 | Knocklayd | Cannot handle non-empty timestamp argument! 1950 |
| 58.0 | York Rd | Cannot handle non-empty timestamp argument! 1907 | Cannot handle non-empty timestamp argument! 1934 | Lurigethan * | Cannot handle non-empty timestamp argument! 1954 |
| 62.0 | York Rd | Cannot handle non-empty timestamp argument! 1903 | Cannot handle non-empty timestamp argument! 1928 | Slemish | Cannot handle non-empty timestamp argument! 1954 |
| 64.0 | Derby | Cannot handle non-empty timestamp argument! 1905 | Cannot handle non-empty timestamp argument! 1929 | Trostan | Cannot handle non-empty timestamp argument! 1954 |
| 65.0 | Derby | Cannot handle non-empty timestamp argument! 1905 | Cannot handle non-empty timestamp argument! 1929 | Knockagh | Cannot handle non-empty timestamp argument! 1950 |
| 66.0 | Derby | Cannot handle non-empty timestamp argument! 1905 | Cannot handle non-empty timestamp argument! 1930 | Ben Madigan | Cannot handle non-empty timestamp argument! 1954 |
| 68.0 | Derby | Cannot handle non-empty timestamp argument! 1908 | Cannot handle non-empty timestamp argument! 1927 | Slieve Gallion | Cannot handle non-empty timestamp argument! 1947 |
Question:
What is the highest number listed?
Answer:
68.0