1. install rootsh
2. open x-term
3. sudo gainroot
4. dpkg-query -W --showformat='${Installed-Size;10}\t${Package}\n' | sort -k1,1n | more

You will get sorted list all installed packages with sizes in Kb. You will get page by page. for next page press "space" for exit "q"
if you want to export list to file use:

dpkg-query -W --showformat='${Installed-Size;10}\t${Package}\n' | sort -k1,1n >> FileName

for looking file use
cat FileName | more