Data Set 1, 1 to 20000 - Total records 20000.
Data Set 2, 20001 to 40000 - Total records 20000.
Data Set 3, 40001 to 60000 - Total records 20000.
Data Set 4, 60001 to 80000 - Total records 20000.
Data Set 5, 80001 to 100000 - Total records 20000.
Data Set 6, 100001 to 120000 - Total records 20000.
Data Set 7 120001 to 140000 - Total records 20000.
Data Set 8, 140001 to 160000 - Total records 20000.
Data Set 9, 160001 to 180000 - Total records 20000.
Data Set 10, 180001 to 200000 - Total records 20000.