The line graph shows the average monthly change in price of 3 metals in 2014

The line graph delineates the monthly percentage fluctuations in the prices of three distinct metals—copper,

nickel

, and

zinc

—throughout the calendar

year

of 2014. In summation, the trajectories of

nickel

and copper prices were predominantly characterized by a downward trend over the observed period, in stark contrast to the upward trajectory evidenced in the

price

of

zinc

. It is imperative to note that the

price

of

nickel

demonstrated the most pronounced volatility. A meticulous examination of the first half of the

year

reveals that the

price

of

nickel

underwent a precipitous decline, plummeting from an exact 6% in January to a mere 1% by March, culminating in a nadir of -3% in June.

Conversely

, the

price

of copper exhibited a more gradual descent, diminishing by approximately 1.5% over the same interval. The

price

of

zinc

, which commenced at a precise 1% in January, experienced a rapid escalation to 3% by February,

subsequently

plunging to -3% in June. Turning our attention to the latter half of the

year

, notwithstanding certain fluctuations, both

nickel

and

zinc

prices experienced a notable ascendancy. The

price

of

nickel

surged to an exact 2% by December,

while

zinc

ascended to 1% by the

year

's end. Concurrently, the

price

of copper exhibited a moderate augmentation to a precise 1% in July, maintaining

this

level for the ensuing three months.

However

, it

subsequently

diminished to approximately 0.5% in December, before rebounding to an estimated 1.5% at the close of the

year

.