The chart delineates the production trends of three main fuel types in a specific European country over the period from 1981 to 2000. It clearly shows that petroleum productionexperienced fluctuations but remained the predominant fuel throughout the period. On the other hand, coal considerable decline, whereas gas production demonstrated a growth trend, despite stabilization in the initial decades.
Initially, petroleum led the production volumes at approximately 100 tonnes, outpacing coal’s 80 tonnes. Petroleum’sproduction escalated to 120 tonnes by 1984, where it stabilized for a few years, before dipping to a low of around 90 tonnes in 1991. Concurrently, coal’s oufairly constant initially, then saw a sharp decrease, reaching 50 tonnes by 1985. Despite a temporary recovery to 70 tonnes, its trajectory continued downward till 1991.
Throughout 1991 to 2000, petroleum’s output saw resurgence, twice peaking at 130 tonnes – in 1995 and 1997 – before declining to 120 tonnes by 2000. Conversely, coal production’s decline persisted, bottoming out at approximately 40 tonnes, significantly less than petroleum’s output. Natural gas, initially the least produced fuel at 40 tonnes, maintained its levels for the first decade but began a steady increase thereafter, culminating in an approximate production of 82 tonnes by 2000, thus becoming the second most produced fuel.