Figure 5: Trends in Aftermarket Vehicle Conversion, 1997-2000: This line graph shows the declining trend in aftermarket vehicle conversions from 1997 to 2000. In 1997, aftermarket vehicle conversions accounted for 8,397 vehicles. By 1998, the number of aftermarket conversions declined to 4,431. In 1999, the number of aftermarket conversions continued its decline to 2,474 vehicles, and by 2000, the number reached its lowest number to date with 2,457 vehicles. Back