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[1] "Vehicles.Category"           "Type.of.Vehicles"           
[3] "Newly.registered.1998.99"    "Newly.registered..1999.2000"
[5] "Total.registered..1998.99"   "Total.registered..1999.2000"

View of dataset

Boxplot for newly registered vehicles

Boxplot for total registered vehicles

Histogram for newly registered vehicles

Histogram for total registered vehicles

Scatter plot for newly registered vs total registered in 1999-2000