Direct access to PCIe utilisation counters through NVML?

Currently the NVML API Reference only mentions one method for retrieval of PCIe throughput; by sampling hardware counters over a 20ms interval (nvmlDeviceGetPcieThroughput). I’d like to obtain accurate, long term PCIe throughput information and am unable to poll this device query every 20ms. Is there any way to query these PCIe utilisation byte counters directly?