Vector of vector of string

#include <iostream>
#include <vector>
#include <string>

using namespace std;
typedef    vector<string>  VS;

vector<VS> data1;
//ofstream   file3;
//ifstream   file4;

VS source {
    "Plains/East/Northeast Severe Weather (June-July 2012)",
            "Severe Storm",
            "2012",
            "3264.0",
            "28",
    "Hurricane Isaac (August 2012)",
            "Tropical cyclone",
            "2012",
            "3122.8",
            "9",
    "Hurricane Sandy (October 2012)",
            "Tropical Cyclone",
            "2012",
            "73494.6",
            "159",
    "Western Wildfires (Summer-Fall 2012)",
            "Wildfire",
            "2012",
            "1964.6",
            "8",
    "U.S. Drought/Heatwave (2012)",
            "Drought",
            "2012",
            "33903.9",
            "123"
};


int main() {
    data1.reserve(20);
    int outer = 0,
        i     = 0;

    while (i < 25) {
       for (int inner = 0; inner <= 4; ++inner) {
           data1[outer].push_back( source[i] );
           i++;
       }
       outer++;
    }

   int test = 2;
   for (i = 0; i <=4; ++i) {
       cout << data1[test][i] << "\n";
   }
   cout << "\n";

   getchar();
}