Question 211177
Construct a dot-plot so you can see the downs and the 
ups in number of planes ordered.
Let 1966 be represented by zero and 2003 be represented
by 37.
Find a regression line or curve and describe it.
Construct another dot plot for 1992-2003.
-----
Use some means or modes or whatever other statistics 
you can to analyze the data.
=================================
Cheers,
Stan H.