Fitch's research institute, BMI, suggests that the US dollar could provide support for Brent crude oil throughout the year. The US dollar index (DXY) is predicted to remain mainly within the 100 and 108 range throughout 2022, with the current value standing at 104. This stability in the dollar's value could have a positive impact on oil prices.

The US economic growth slowdown and swifter-than-expected interest rate cuts might drive the dollar down, potentially leading to lower oil prices. However, the ongoing US presidential election, increased geopolitical risks, and a generally tougher environment for risk assets in the second half of 2022 could potentially push the dollar higher, thereby boosting oil prices.

In terms of oil demand, BMI forecasts a 1.9 million barrels per day (bpd) increase this year. This growth in demand, combined with the stability in the dollar's value, could lead to higher oil prices. On the supply side, oil prices have generally been buoyed as OPEC+ continues to maintain tight control over the market.

The OPEC+ agreement has been successful in maintaining a balance between supply and demand, which has helped to stabilize oil prices. The group's efforts to manage the market have been crucial in preventing a significant decline in oil prices.

In conclusion, BMI's forecast suggests that the US dollar could provide support for Brent crude oil throughout 2022. The stability in the dollar's value, combined with the growth in oil demand and the OPEC+ agreement, could lead to higher oil prices. The ongoing US presidential election and increased geopolitical risks could also impact the dollar's value and, in turn, oil prices.