Sport activities over the years

Seven years ago I started tracking my daily sports activities. I've created an online form using google docs, it was automatically mailed to me daily, and that's why I almost never missed a day.
Throughout the years I never found the time to fetch the data and do some basic analysis and visualization.
Even though the year 2012 is not yet over, I was curious to see some graphs of my data. After some basic aggregation using a ruby script, you can see a graph showing for each activity the number of times (days) I engaged in it. It is far from being as beautiful as Stephen Wolfram's cool visualizations, but nonetheless I'm proud of it :)



So, what did learn?

• On average I'm engaged in sports for around 200 days of the year. That's more than 50%.
• Since 2007 I gave up on basketball (because I left my previous work place)
• Since 2007 I almost never surfed (because my wife and I left our studio which was located by the beach)
• Since 2009 I started to play tennis
• Starting with 2011 I'm doing dips exercise in addition to pull-ups