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 | Player | Country | Earnings( $ ) | Wins |
| --- | --- | --- | --- | --- |
| 1.0 | Hale Irwin | United States | 16950178.0 | 36.0 |
| 2.0 | Gil Morgan | United States | 11092593.0 | 21.0 |
| 3.0 | Jim Colbert | United States | 10840374.0 | 20.0 |
| 4.0 | Dave Stockton | United States | 9735814.0 | 14.0 |
| 5.0 | Lee Trevino | United States | 9616404.0 | 29.0 |
Question:
What's hale irwin's average rank?
Answer:
1.0