1) sales/100 units/ At the beginning of the year 2002 /sharply/stood at/and rose
2) Sales /at 200 units/remained constant /by the middle of /2003
3) rapid/ In the middle of 2003 /there was a/50 units /drop of
4) dramatically/ At the beginning of 2004 /grew/400 /and reached/sales/a peak of
5) over/ There was a /decline of 50 units/slight/the first half of the year
6) fluctuated/ Sales /during 2 years/by the end of 2006
7) by 200 units/dropped /sharply/ Sales /to 150/by the middle of 2007
8) by 2008/ There was a /decline/over 6 months/steady