The chart delineates the production trends of three main fuel types1 in1 a specific European country over2 the2 period2 from 1981 to 2000. It clearly3 shows3 that petroleum production experienced4 fluctuations4 but remained the predominant fuel throughout5 the5 period5. On the other hand, coal6 considerable8edecline8, whereas gas10 production10 demonstrated a growth11 trend11, despite stabilization in the initial decades.
Initially, petroleum led the production12 volumes12 at approximately 100 tonnes, outpacing coal’s 80 tonnes. Petroleum’s production 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 oufairly14 constant14 initially, then saw a sharp15 decrease15, reaching 50 tonnes by 1985. Despite a temporary recovery16 to16 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 produced17 fuel17 at 40 tonnes, maintained18 its levels18 for the first decade19 but began19 a steady20 increase20 thereafter, culminating in an approximate production of 82 tonnes by 2000, thus becoming the second most produced fuel.