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:
| Player | Country | Year(s) won | Total | To par | Finish |
| --- | --- | --- | --- | --- | --- |
| Jack Nicklaus | United States | 1962 , 1967 , 1972 | 272.0 | –8 | 1 |
| Hale Irwin | United States | 1974 , 1979 | 282.0 | +2 | T8 |
| Andy North | United States | 1978 | 282.0 | +2 | T8 |
| Lee Trevino | United States | 1968 , 1971 | 284.0 | +4 | T12 |
| Hubert Green | United States | 1977 | 288.0 | +8 | T32 |
| Lou Graham | United States | 1975 | 293.0 | +15 | T51 |
| Arnold Palmer | United States | 1960 | 301.0 | +21 | 63 |
Question:
What years did Lou Graham win in?
Answer:
1975.0