"Year","Quarter","Sales"
1997,1,18
1997,2,22
1997,3,27
1997,4,31
1998,1,33
1998,2,20
1998,3,38
1998,4,26
1999,1,25
1999,2,36
1999,3,44
1999,4,29
2000,1,41
2000,2,33
2000,3,52
2000,4,45