I have a data frame with the following columns:

```
**Columns   Country   Year   Number_of_deaths**
**Data**      US      2000    25
              US      2001    30
              UK      2000    30
              UK      2001    21

```

I want to convert this to the following format:

```
**Columns: Country   2000   2001   2002   2003   2004**
**Data**     US        25     30     35     40     25
             UK        30     21     21     23     45

```

Can somebody give me sample code in R to do this? Any package is fine. Your help will be appreciated.