Am I surfing too much?

Period (Month)	Download	Upload	Total
September 2005	2.76 GB	1.37 GB	4.13 GB
October 2005	4.01 GB	1.45 GB	5.47 GB
November 2005	4.12 GB	2.71 GB	6.84 GB
December 2005	7.03 GB	3.71 GB	10.75 GB
January 2006	7.29 GB	8.49 GB	15.78 GB
February 2006	2.65 GB	2.69 GB	5.34 GB
March 2006	6.23 GB	5.61 GB	11.84 GB