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:
| Years covered | All bills sponsored | All amendments sponsored | All bills cosponsored | All amendments cosponsored | Bills originally cosponsored | Amendments originally cosponsored |
| --- | --- | --- | --- | --- | --- | --- |
| 2007–08 | 22.0 | 16.0 | 133.0 | 74.0 | 101.0 | 57.0 |
| 2005–06 | 75.0 | 68.0 | 152.0 | 42.0 | 113.0 | 36.0 |
| 2003–04 | 77.0 | 112.0 | 181.0 | 47.0 | 116.0 | 39.0 |
| 2001–02 | 54.0 | 178.0 | 121.0 | 55.0 | 97.0 | 53.0 |
| 1999-00 | 102.0 | 65.0 | 175.0 | 37.0 | 110.0 | 33.0 |
| 1997–98 | 74.0 | 150.0 | 147.0 | 59.0 | 79.0 | 50.0 |
| 1995–96 | 80.0 | 137.0 | 118.0 | 61.0 | 66.0 | 56.0 |
| 1993–94 | 53.0 | 91.0 | 201.0 | 89.0 | 98.0 | 82.0 |
| 1991–92 | 159.0 | 52.0 | 353.0 | 66.0 | 175.0 | 63.0 |
| 1989–90 | 39.0 | 24.0 | 247.0 | 86.0 | 150.0 | 81.0 |
| 1987–88 | 24.0 | 15.0 | 342.0 | 79.0 | 171.0 | 76.0 |
| 1985–86 | 12.0 | 10.0 | 335.0 | 0.0 | 117.0 | 0.0 |
Question:
What is the greatest number of bills sponsored in any year?
Answer:
159.0