How to add values to each list?
before :
[['2010', '10', '24', '20', '32', '18', '5'], ['2020', '16', '22', '23', '30', '16', '9'], ['2030', '28', '19', '29', '30', '12', '13']]
result : [list] value add ''
[['2010', '10', '24', '20', '32', '18', '5', ''], ['2020', '16', '22', '23', '30', '16', '9', ''], ['2030', '28', '19', '29', '30', '12', '13', '']]