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:
| Rank | Name | Height ft / m | Floors | Year |
| --- | --- | --- | --- | --- |
| 1 | U.S. Steel Tower | 841 / 256 | 64.0 | 1970.0 |
| 2 | BNY Mellon Center | 725 / 221 | 54.0 | 1983.0 |
| 3 | One PPG Place | 635 / 194 | 40.0 | 1984.0 |
| 4 | Fifth Avenue Place | 616 / 188 | 31.0 | 1988.0 |
| 5 | One Oxford Centre | 615 / 187 | 45.0 | 1983.0 |
| 6 | Gulf Tower | 582 / 177 | 44.0 | 1932.0 |
| 7 | Cathedral of Learning | 535 / 163 | 42.0 | 1936.0 |
| 8 | 525 William Penn Place | 520 / 158 | 41.0 | 1951.0 |
| 9 | K&L Gates Center | 511 / 156 | 39.0 | 1968.0 |
| 10 | Grant Building | 485 / 148 | 40.0 | 1930.0 |
| 11 | Koppers Tower | 475 / 145 | 34.0 | 1929.0 |
| 12 | Two PNC Plaza | 445 / 136 | 34.0 | 1975.0 |
| 13 | EQT Plaza | 430 / 131 | 32.0 | 1987.0 |
| 14 | One PNC Plaza | 424 / 129 | 30.0 | 1972.0 |
| 15 | Regional Enterprise Tower | 410 / 125 | 30.0 | 1953.0 |
| 16 | Three PNC Plaza | 361 / 110 | 23.0 | 2009.0 |
| 17 | Federated Tower | 358 / 109 | 27.0 | 1982.0 |
| 18 | 11 Stanwix Street | 355 / 108 | 23.0 | 1969.0 |
| 19 | Oliver Building | 347 / 106 | 25.0 | 1910.0 |
| 20 | Three Gateway Center | 344 / 105 | 24.0 | 1952.0 |
| 21 | Centre City Tower | 341 / 104 | 26.0 | 1971.0 |
| 22 | William S. Moorhead Federal Building | 340 / 104 | 23.0 | 1964.0 |
| 23 | Bell Telephone Building | 339 / 103 | 20.0 | 1923.0 |
| 24 | Wyndham Grand Pittsburgh Downtown | 333 / 102 | 22.0 | 1959.0 |
| 25 | Frick Building | 330 / 101 | 20.0 | 1902.0 |
| 26 | Four Gateway Center | 305 / 93 | 22.0 | 1960.0 |
| 27= | Washington Plaza | 300 / 91 | 24.0 | 1964.0 |
| 27= | Commonwealth Building | 300 / 91 | 21.0 | 1906.0 |
| 27= | The Carlyle | 300 / 91 | 21.0 | 1906.0 |
Question:
Name the year for 8 rank
Answer:
1951.0