hi, i'm from indonesia, sorry my english is not good  
Now, I'm doing task about annual chart in a bar graph 
I will tell about my task  first 
1. Raw data (format .csv) will be uploaded in system , then display table containing this data 
     -No 
    -Name 
    - Gender (M or F) 
  
2.Then the table will appear in system like this: 
   -No 
    -Year 
    - Total of Male 
   -Total of Female 
  
3. Chart will be changed every year when we upload Data 
=> My Question is   How can I count this gender in chart and display in chart because the format csv  does not exist about year? 
  
====Thanks======