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 | County | Balls | Wickets | Average | Economy | BBI | 4wi | 5wi |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| Keith Boyce Category:Articles with hCards | Essex | 708.0 | 26.0 | 12.00 | 2.54 | 3/15 | 0.0 | 0.0 |
| Peter Sainsbury Category:Articles with hCards | Hampshire | 644.0 | 28.0 | 13.96 | 3.64 | 4/23 | 2.0 | 0.0 |
| Stuart Turner Category:Articles with hCards | Essex | 639.0 | 27.0 | 14.85 | 3.76 | 4/14 | 1.0 | 0.0 |
| Ken Higgs Category:Articles with hCards | Lancashire | 673.0 | 26.0 | 15.23 | 3.53 | 4/22 | 1.0 | 0.0 |
| Ray East Category:Articles with hCards | Essex | 660.0 | 29.0 | 15.24 | 4.01 | 6/18 | 0.0 | 2.0 |
| Butch White Category:Articles with hCards | Hampshire | 698.0 | 26.0 | 17.92 | 4.00 | 5/31 | 1.0 | 1.0 |
Question:
How many wickets was there when the economy was 3.64?
Answer:
28.0