According to the Fisher equation of exchange ($MV=PT$), there is a direct relationship between the money supply and price levels. In a certain inflation-targeting economy, the central bank monitors these variables.

In the base year (Year 1), the index for the money supply ($M$), the velocity of circulation ($V$), the price level ($P$), and the real volume of transactions ($T$) is 100.

In Year 2, the following index values are recorded:

• Price level ($P$): 112
• Volume of transactions ($T$): 108
• Velocity of circulation ($V$): 96

What is the index for the money supply ($M$) in Year 2?