First generation B11 (1982–1986) |
Second generation B12 (1985–1990) |
Third generation B13 (1990–1994) |
Fourth generation B14 (1995–1999) |
| Fifth generation B15 (2000–2006) |
Sixth generation B16 (2007–2012) |
| Seventh generation B17 (2013–2018) |
Eighth generation B18 (2019–present) |
