In R studios, load the nst-est2011-06.csv from the census website and store the dataset as a dataframe called events.

Use data munging techniques create a dataframe called states.

The dataframe should have a row for every state: Exclude Puerto Rico, include Washington DC

The dataframe should have 8 columns: state, population change, natural increase, births, deaths, migration total, international migration, domestic migration

Show the head() and tail() of the dataframe states