If Cash Return on Assets increases over time:
An increasing Cash Return on Assets generally indicates the company is more able to generate revenue from its assets.
If Cash Return on Assets decreases over time:
A decreasing Cash Return on Assets generally indicates the company is less able to generate revenue from its assets.
If Cash Return on Assets stays the same over time:
An unchanged Cash Return on Assets generally indicates the ability of the company to generate revenue from its assets has remained the same.