Pandas Pivoting Dataframe
<p>I have a dataframe as shown below, I would like to perform a pivot so that I can plot the top 3 countries GDP per year. So I need to pivot the datadrame in such a way that it returns me the the 3 Countries with the 3 highest GDP each year</p>

<p>Any ideas? </p>

<pre><code> Year  Country   GDP
 01    USA      100
 01    UK        80
 01    Japan     50
 01    China     75
 02    USA       90
 02    UK        65
 02    Japan     70
 02    China     80
</code></pre>