Best way to graph counts of start year and end years?

[jilllellis]

Hi. I a list of warranty start and end years. There are MANY different combos. I have combined them into a count of how many started in 2000 and ended in 2000, etc. SO i have three columns:
Start Year End Year Count of Warranties
2000 2000 x
2000 2001 x
2000 2002 x
Etc etc etc

By arranging my data this way, i went from over 70k rows to about 135. My question is, what is the best way to graph this? I have done a bubble graph and it looks a bit weird. The date range is only 15 years so that might be why my graph looks so weird. Any insight would be appreciated.
thanks!

 

[jilllellis]

the post didnt post it how i wrote it--- the example data is supposed to correspond with start year, end year, count of warranties. three columns with three rows under it.