I've been using on and off for 5 years, anywhere from 20-400mg of oxy or hydrocodone a month and while I've noticed an increase in tolerance I haven't become physically dependent on either of them.
The only time I was physically addicted was a tianeptine binge I went on about 8 months ago. I was taking about 500mg-1000mg of tianeptine a day and was doing that for 2 weeks straight, I was high nonstop besides when I went to work from 8am-5pm. Once I ran out I experienced very bad withdrawals, extreme shits, 2 hours of bad sleep a day, stomach cramps, and muscle aches. It seems to take at least a week and a half of 30-50mg oxy everyday for me to feel sick when I stop using oxy but even then it's only mild.
Really it's different for everyone depending on your neurochemistry, body, previous use, and tolerance. It's very hard to say but I'd think the withdrawal will feel more like 60mg a day since you've been taking that for a year and your body probably hasn't adjusted to 200mg yet.