Click here to see the SAS code.
Click here to see the example.


Using data from here:

And trying to make a better/more-technical graph than these:

I try to keep the axes very simple, with all values shown 
in the same units (billion $, with 1 decimal place).
I use reference lines so you can visually see which years
cross the certain billion $ amounts.  I use the Gplot 
'needle' interpolation.

And the ball at the top of each needle has html mouse-over
text, so you can see the exact value (and where the values 
are small, I display it in a more friendly format than
billion dollars).

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