The code for this chart is : # Define Function $3$ below:

def plot$\_$station$\_$counts$\_$per$\_$year$($df$,$ title$)$:

df$[\text{'}$Year Opened'$]=$ df$[\text{'}$Open Date'$].$str$[0$:$4]$

years$\_$grouped $=$ df$.$groupby$(\text{'}$Year Opened'$)$

year$\_$counts $=$ years$\_$grouped$[\text{'}$Year Opened'$].$agg$(\text{'}$count$\text{'})$

fig, ax $=$ plt$.$subplots$()$

ax$.$plot$($year$\_$counts.index, year$\_$counts.values$)$

ax$.$set$\_$title$($title$)$

ax$.$set$\_$xlabel$(\text{'}$Year$\text{'})$

ax$.$set$\_$ylabel$(\text{'}$Count$\text{'})$

plt$.$show$()$#

Total number of new fuel stations $($across all fuel stations$)$:

new$\_$fuel$\_$stations$\_$by$\_$year $=$ plot$\_$station$\_$counts$\_$per$\_$year$($data$,$ 'Number of new alternative fuel stations in North America'$)$

we need to filter the years on the x axis to $1980,1990,2000,2010$