A doubt on the Regression of Mankiw, Romer, Weil 1992 paper I'm trying to replicate the regression of the MRW 1992 paper.
(Here's the data, if you're interested)

In the same page where the data set is available, there's this handout explaining how to replicate the results. In page 2 of this handout, we can see two simple stata commands: 

li_y=ln(i_y/100) 
 g lpop=ln(0.05+popgrowth/100)


My question is why the variables i_y (this is Investment over GDP), and popgrowth(this is an averaged population growth rate between 1960-1985) are divided by 100?

Nowhere in the MRW 1992 paper, do I read something telling me that it's necessary to divide it by 100, or do I?

Any help would be appreciated
I had a look at the data, and it is like @denesp says in his comment: e.g. a $2.60\%=0.0261$ population growth rate is written as $2.60$, a $24\%=0.24$ investment-to-output ratio is written like $24.0$, etc. 
So they must be divided by $100$.