A db's size from 8.0.2 to 8.5

I installed 8.5 on a server this weekend, and monitored how the size of a mail db changed during the upgrade and with different compression options checked. After each change I compacted the db with command LOAD COMPACT path\dbname.nsf -c

Ver.	ODS	SIZE	OPTIONS CHECKED
8.0.2	48	534 773 760	LZH and design comp
8.5	48	534 773 760	LZH and design comp
8.5	51	533 200 896	LZH and design comp
8.5	51	511 442 944	LZH, design and data compression