Changing String to Integer in Dictionary (Python) : I am trying to convert a list made up of strings in a dictionary to float variables.

Here is the code I was given: 
```
data = {'year':[1990, 2000, 2010], 'gdp':['8.95', '12.56', '14.78']}
```

The end result is supposed to look like this:
```
data = {'year':[1990, 2000, 2010], 'gdp':[8.95, 12.56, 14.78]}
```


Thank you in advance for any hints or help!