The article "Water supply and demand, 1995 to 2025" by the International Water Management Institute (IWMI) in their Annual Report 1999-2000 discusses the balance between water supply and demand. The researchers looked at data from 1995 to 2025 to understand how water availability and usage are changing over time. They found that the demand for water is increasing due to population growth and economic development, putting pressure on water resources. This highlights the importance of managing water sustainably to ensure there is enough for everyone in the future.