title: Plot two pandas dataframes in one scatter plot
body: <p>I have two dataframes with the same index and columns like:</p>
  
  <pre><code>import pandas as pd
  dfGDPgrowth = pd.DataFrame({'France':[2%, 1.8%, 3%], 'Germany':[3%, 2%, 2.5%]}, index = [2007, 2006, 2005])
  dfpopulation = pd.DataFrame({'France':[100, 105, 112], 'Germany':[70, 73, 77]}, index = [2007, 2006, 2005])
  </code></pre>
  
  <p>Is there a straightforward matplotlib way to create a scatter plot with x-axis % grow and y-axis population?</p>
  
  <p>Edit: My dataframe has 64 columns so I wonder if it could be done with some loop so I don't have to input them all manualy.</p>