# The following example shows the populations for some animals
# over the years.
#
df = md.DataFrame({
   'pig': [20, 18, 489, 675, 1776],
   'horse': [4, 25, 281, 600, 1900]
   }, index=[1990, 1997, 2003, 2009, 2014])
lines = df.plot.line()