10.25 Trucks versus cars. Do consumers prefer trucks, SUVs, and minivans to passenger cars? Here are data on sales and leases of new cars and trucks in the United States. (The definition of “truck’’ includes SUVs and minivans.) Plot two line graphs on the same axes to compare the change in car and truck sales over time. Describe the trend that you see.
| Year: | 1981 | 1983 | 1985 |
| Cars (1000s): | 8,536 | 9,182 | 11,042 |
| Trucks (1000s): | 2,260 | 3,129 | 4,682 |
| Year: | 1987 | 1989 | 1991 |
| Cars (1000s): | 10,277 | 9,772 | 8,589 |
| Trucks (1000s): | 4,912 | 4,941 | 4,136 |
| Year: | 1993 | 1995 | 1997 | 1999 | 2001 |
| Cars (1000s): | 8,518 | 8,636 | 8,273 | 8,697 | 8,422 |
| Trucks (1000s): | 5,654 | 6,469 | 7,217 | 8,704 | 9,046 |
| Year: | 2003 | 2005 | 2007 | 2009 | |
| Cars (1000s): | 7,615 | 7,720 | 7,618 | 5,456 | |
| Trucks (1000s): | 9,356 | 9,725 | 8,842 | 5,145 |