application_vnd.jupyter.stderr_output_1.png
df2015 = pd.read_csv('/kaggle/input/world-happiness/2015.csv')
df2016 = pd.read_csv('/kaggle/input/world-happiness/2016.csv')
df2017 = pd.read_csv('/kaggle/input/world-happiness/2017.csv')
df2018 = pd.read_csv('/kaggle/input/world-happiness/2018.csv')
df2019 = pd.read_csv('/kaggle/input/world-happiness/2019.csv')