[opensuse] Location of user crontab?

Where does my user crontab get stored? I have to reconstruct it each time I reinstall the system, so I thought I should add it to my backup. Bob -- Bob Williams System: Linux 4.4.92-31-default Distro: openSUSE 42.3 (x86_64) Desktop: KDE Frameworks: 5.32.0, Qt: 5.6.2 and Plasma: 5.8.7