MakeDescription	Year
plymouth cuda 340	1970
ford mustang boss 302	1970

MakeDescription	Year
plymouth cuda 340	1970

FullName	NumCars	AvgMpg
Volkswagen	2	29.25

Year	FullName	NumCars	AvgMpg
1970	Nissan Motors	1	27
1971	Nissan Motors	2	31
1972	Nissan Motors	1	28
1973	Fiat	2	27.5
1974	Nissan Motors	2	31.5
1975	Honda	1	33
1976	Honda	1	33
1977	Renault	1	36
1978	Mazda	1	32.79999923706055
1979	Fiat	1	37.29999923706055
1980	Renault	1	40.900001525878906
1981	Renault	1	34.5
1982	Volkswagen	2	40

MakeDescription	Year	CountryName
oldsmobile cutlass ls	1981	usa

difference
8.600000381469727

CountryName	NumModels
usa	2
germany	2
france	1
japan	4
sweden	2