The value of a certain car depreciates exponentially over time. The table shows the relationship between the time , in years, since the car was purchased and its total value , in dollars. If the car's value continued to depreciate at the same rate, what is the best estimate of the car's value after 5 years, rounded to the nearest dollar?
| Time (years) | Total Value (dollars) |
|---|---|
| 0 | 20000 |
| 1 | 19800 |
| 2 | 19602 |
