title: Count of crashes and injuries?
body: <p>I have a dataset from dot.gov website that I have to analyze as part of our school project. It contains a lot of information, but I am just focusing on crashes and injuries. How do I count the number of crashes or injuries from the year 2007-2014 for example?</p>
  
  <p>Do I have to subset my data per year or is there a more efficient way to do it? Thank you!</p>
  
  <p>Below is a sample of my dataset:
  <a href="https://i.stack.imgur.com/jcF6Q.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jcF6Q.png" alt="Sample dataset"></a></p>