Overall, it is clear that other industries were by the most important means of acid rain emissions. Domestic sector produced the lowest amount of acid rain emitted in each year.
In 1991, the amount of acid rain emitted by gas and water supply started at 3.3 million tones, contributing the most to the emission, followed by other industries with 2.1 million tones. Meanwhile, transport and communication and domestic factor, each generated around 0.7 million tone of acid rain.
Five year later, other industries overtook electricity, gas and water supply factors as the primary reason which caused acid rain emissions. Between 1991 and 1999, the acid rain emissions from electricity, gas and water supply factor reduced significantly to 1 million tones. By the contrast, the acid rain emitted from other industries decreased slowly until 2001 and remained at this level for the rest of the period. From 1999 to 2005, the acid rain emitted by transport and communication increased slightly to 0.5 million tones. In case of the number of acid rain emissions caused by domestic factor, the figure shows the very slightly reduction of acid rain emissions to 0.2 million tones for the whole 17-year period.