Plot running data from $2013$ through $2018.$

Subset df$\_$run for data from $2013$ through $2018.$ Take into account that observations in dataset stored in chronological order $-$ most recent records first. Assign the result to runs$\_$subset$\_2013\_2018.$

In the plotting code, enable subplots by setting the subplots parameter to True. Don$$t use spaces around the $=$ sign when used to indicate a keyword argument, as recommended in PEP $8$ style guide for Python code.

Show the plot using plt$.$show$().$