import pandas as pd

# Specify the columns to optimze
columns_to_load = ['country', 'daily_vaccinations']

# Read the CSV file
df = pd.read_csv('/Users/ComputerX/Downloads/country_vaccination_stats.csv', usecols=columns_to_load)

print(df.groupby('country')['daily_vaccinations'].median().sort_values(ascending=False).head(3))