fars_summarize_years: Summarize FARS years
In JamasEnright/FARS: Loads in and Maps FARS data

Description Usage Arguments Value Examples

This takes in a vector of years and reads the data for them. Then this function creates a summary of the number of observations in each year and month.

1	fars_summarize_years(years)

years

A vector of intergers, representing the years to summarise

This function returns a dataset containing the year, month and number of observations.

## Not run: 
fars_summarize_years(c(1991,1992,1993))
fars_summarize_years(2001)
fars_summarize_years(c(1991,2002,2013))
fars_summarize_years("ababab")

## End(Not run)