Average annual expenditure per tree by region, 1986.
| Region | Mean | Median |
|---|---|---|
| Overall | $10.62 | $8.04 |
| Northeast | 6.92 | 4.84 |
| North Central | 10.26 | 9.36 |
| South1 | 10.31 | 6.00 |
| West | 13.11 | 12.87 |
↵1 Each category represented by at least 32 responding cities except South region.