SNMP and ssCpuRawSystem

Not sure how to convert ssCpuRawSystem to the current (or last 1 min) load on the system. Well, "System" load.

snmpwalk -Oa -c foo -v 1 myserver .1.3.6.1.4.1.2021.11.52
UCD-SNMP-MIB::ssCpuRawSystem.0 = Counter32: 15235046

Here is the definition of ssCpuRawSystem
The number of 'ticks' (typically 1/100s) spent processing system-level code. On a multi-processor system, the 'ssCpuRaw*' counters are cumulative over all CPUs, so their sum will typically be N*100 (for N processors). This object may sometimes be implemented as the combination of the 'ssCpuRawWait(54)' and 'ssCpuRawKernel(55)' counters, so care must be taken when summing the overall raw counters.

Ideas?
-Adam