The provided line graph displays the percentage changes for pricing rates over a span of year 2014, broken down by months. All items shown are non-ferrous metals that make up German silver alloy, namely copper, nickel and zinc. Overall, nickel experienced a remarkable decrease, while other metals cycled in value throughout the year, regaining their initial positions towards the end of the period.
Examining the broader trend, all three metals demonstrated general upward momentum throughout 2014. Despite considerable fluctuations across the twelve-month period, the median increase across all metals hovered around 1% mark, indicating modest but consistent growth in the sector. Each metal commenced January with positive percentage changes and concluded December at similarly positive levels.
The most significant feature was a pronounced mid-year decline. Beginning in June, all three metals fell below the 0% threshold, marking a period of suppressed prices. However, copper demonstrated resilience by recovering to approximately 1% growth rate by August. In contrast, zinc and nickel remained in negative territory until October, with nickel experiencing the most severe downturn, reaching nearly -3% before its eventual recovery commenced in the final quarter.