Semi-precious metals

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The 'Copper - US$ per tonne' chart will be drawn here.
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closing prices
Source: LME
The 'Copper - NZ$ per tonne' chart will be drawn here.
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closing prices
Source: LME
The 'Aluminium - US$ per tonne' chart will be drawn here.
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closing prices
Source: LME
The 'Aluminium - NZ$ per tonne' chart will be drawn here.
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closing prices
Source: LME

The data for these two commodities are from the London Metals Exchange, end of day pricing in US$ per tonne, quoted on a next-day basis.

Copper is considered the benchmark semi-precious metal, and often quoted as a leading indicator of economic growth.

Aluminium is included here because it is an important export from New Zealand.