Swap usage climbing

Hi

I have a FreePBX 2.11 system that has a current uptime of 30 weeks

I have recently noticed that the App memory is stable at 29% but the swap has been slowly creeping up. The last day the bar was in the yellow at 71% but it has since dropped to 69%

Is this normal?

I am running 2.11 5.211.65.21

According to a script ive ran asterisk us currently using 205632kb of swap

There is no impact on calls but I am just wondering what will happen if the bar goes into the yellow again or the red.
Thanks

how much memory do you have on your system?

4gb

Currently showing 1.05GB used, 3.69gb total available