"Figure 4 Percentage of Total Vehicles, by Model Year that are Unregistered for 
More Than 3 Months",,, 
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