Question Samsung 990 Pro -40% random read/write 1 year later

[Z0FT]

I'm just wondering if I should be concerned with the 990 Pro 2TB random read/write performance being slow 1 year later, these are the benchmarks:

1/10/24
------
Sequential Read: 7378
Sequential Write: 6740
Random Read: 1397705
Random Write: 1014160

12/1/24
-------
Sequential Read: 7420
Sequential Write: 6874
Random Read: 846923
Random Write: 529785

Temps are fine maxing out at around 47* C. The drive is also half full at 1.02 TB, compared to prolly only 100gb or so when I ran the test back in January. Should I be concerned, or is this normal with having more data stored?

(Diagnostic scan came back 100% fine btw, using firmware 4B2QJXD7)