goods transported in UK (1974-2002)

The line graph illustrates the number of goods transported through four public transportations, including road, water, rail, pipeline in the UK in the period from 194 to 2002. Overall, four public systems experienced fluctuation over time, despite that road always surpassed others in the quantity of delivered commodities. For instant, road witnessed ups and downs in between 70 and nearly 80milion tons in the first 20 years, followed by a jump to about 100 million tons in the last year, By contrast, the least amount of goods was transported via pipeline when it experienced a marginal growth from approximately 1 to 2 million tons in the first four years ensued by a gradual climb to exactly 21 million tons till 1994 and plateau at 22 million tons in 2002. Meanwhile, the amount of goods carried by waterways and railway remained the same at around 40 million tons in the first four years and then railway began to see fluctuations between 30 and 40 million tons during the final years while waterway increase to 55 million tons at the end of 1982. Its figure the stabilized at 60 million till 1994, despite a surge to nearly 70 million in the last year. Interesting point, the biggest gap was seen in 1998 when road almost quadrupled pipeline in the quantity of delivered goods.