Fill area under line plot

# matplotlib_area_plots.py

import matplotlib.pyplot as plt

ages = [12, 13, 14, 15, 16, 17, 18, 19, 20, 21]

total_population = [27877307, 24280683, 25258169, 25899454, 24592293, 21217467, 27958147, 20859088, 28882735, 19978972]

plt.plot(ages, total_population)
plt.xlabel("Age")
plt.ylabel("Total Population")
plt.title("Age-wise population of India")
plt.tight_layout()
plt.fill_between(ages, total_population)
plt.show()