20. High coffee prices give farmers in Indonesia an incentive to cut forest in order to plant more coffee. Here are data on coffee price (dollars per pound) and percentage of deforestation in a national park for five years:
| 0.29 | 0.40 | 0.54 | 0.55 | 0.72 | |
| 0.49 | 1.59 | 1.69 | 1.82 | 2.98 |
Using a calculator, we can determine that the correlation between and has a value of _________, to the nearer hundredths place.
20.