Looking at the latest numbers even the JDK 8 release grew in size.
$ du -hs jdk-*
181M jdk-8u152-linux-x64.tar.gz
339M jdk-9.0.1_linux-x64_bin.tar.gz
331M jdk-9_linux-x64_bin.tar.gz
I'm adjusting the default to 180 and override it for JDK 9 releases
with 340 for now.