Bubble Plots

plt.figure(figsize=(12, 8))
plt.scatter(years, Brazil, 
                  color='darkblue', 
                 alpha=0.5,
                 s = b_normal * 2000)
plt.scatter(years, India, 
                  color='purple', 
                 alpha=0.5,
                 s = i_normal * 2000,
                 )
plt.xlabel("Years", size=14)
plt.ylabel("Number of immigrants", size=14)