In 2023, the total support on natural gas for residential use in Italy was at a specific point that is undisclosed in the provided data. The forecasted growth in support from 2024 to 2028 represents a gradual increase year-on-year, with values going from 0.018% of GDP in 2024 to 0.023% of GDP in 2028. This indicates a consistent increase in the allocation of GDP towards natural gas support, reflecting a compound annual growth rate (CAGR) over this period.

Future trends to watch for include:

The impact of European Union energy policies and regulations.
Potential shifts towards renewable energy affecting natural gas demand.
Economic fluctuations that could alter GDP-based allocations.
Technological advancements in energy efficiency influencing residential energy consumption.