When was the last time the Fed raised or lowered the federal funds rate by 5 basis points? And when was the last time they raised or lowered it by 50 or 75 basi

When was the last time the Fed raised or lowered the federal funds rate by 5 basis points? And when was the last time they raised or lowered it by 50 or 75 basis points? If you've been following, you'd sooner expect the next increase to be 50 or 75 basis points than 15 let alone 5.