Figure 3-4. CET Days-in-the-Field
- June 1996: 0
- July 1996: 24
- August 1996: 57
- September 1996: 349
- October 1996: 2743
- November 1996: 11005
- December 1996: 24050
- January 1997: 38306
- February 1997: 54146
- March 1997: 86186
- April 1997: 130937
- May 1997: 192865
- June 1997: 260779
- July 1997: 333438
- August 1997: 407466
- September 1997: 481416
- October 1997: 559688
- November 1997: 636002
- December 1997: 714836
- January 1998: 793603
- February 1998: 864722
- March 1998: 943472
- April 1998: 1020374
- May 1998: 1100250
- June 1998: 1177501
- July 1998: 1257271
- August 1998: 1336942
- September 1998: 1413984
- October 1998: 1493603
- November 1998: 1570644
- December 1998: 1650304
- January 1999: 1730000
- February 1999: 1801956
- March 1999: 1881590
- April 1999: 1960334
- May 1999: 2042668
- June 1999: 2122498
- July 1999: 2205158
- August 1999: 2287974
- September 1999: 2368299
- October 1999: 2458916
- November 1999: 2542407
- December 1999: 2630269
- January 2000: 2720161
- February 2000: 2805285
- March 2000: 2896325
- April 2000: 2984405
- May 2000: 3075336
- June 2000: 3163288
- July 2000: 3254159