Excel | CSV | Graphic Version
| Model year | % of vehicles |
|---|---|
| 1972 | 2.8 |
| 1973 | 0.8 |
| 1974 | 2.1 |
| 1975 | 1.0 |
| 1976 | 2.5 |
| 1977 | 1.8 |
| 1978 | 2.5 |
| 1979 | 2.0 |
| 1980 | 1.5 |
| 1981 | 1.7 |
| 1982 | 2.0 |
| 1983 | 1.2 |
| 1984 | 1.3 |
| 1985 | 1.3 |
| 1986 | 1.4 |
| 1987 | 1.0 |
| 1988 | 0.9 |
| 1989 | 1.0 |
| 1990 | 0.8 |
| 1991 | 0.7 |
| 1992 | 0.7 |
| 1993 | 0.6 |
| 1994 | 0.8 |
| 1995 | 0.8 |
| 1996 | 0.8 |
| 1997 | 1.0 |
| 1998 | 0.7 |
| 1999 | 1.3 |
| 2000 | 10.0 |