国际白银价格的供给因素
关键字：国际白银价格、白银价格供给因素
（1）地上的白银存量
全球目前大约存有13.74万吨白银，而地上现货白银的存量每年还在大约以2%的速度增长。
（2）年供求量
白银的年供求量大约为4200吨，每年新产出的白银占年供应的62%。
（3）新的金矿开采成本
白银开采平均总成本大约略低于260美元/盎司。由于开采技术的发展，白银开发成本在过去20年以来持续下跌。
（4）白银生产国的政治、军事和经济的变动状况
在这些国家的任何政治、军事动荡无疑会直接影响该国生产的白银数量，进而影响世界白银供给。
（5）央行的白银抛售
中央银行是世界上白银的最大持有者，1969年官方白银储备为36458吨，占当时全部地表白银存量的42.6%，而到了1998年官方白银储备大约为34000吨，占已开采的全部白银存量的24.1%。按目前生产能力计算，这相当于13年的世界白银矿产量。
由于白银的主要用途由重要储备资产逐渐转变为生产珠宝的金属原料，或者为改善本国国际收支，或为抑制国际银价，因此，30年间中央银行的白银储备无论在绝对数量上和相对数量上都有很大的下降，数量的下降主要靠在白银市场上抛售库存储备白银。例如英国央行的大规模抛售、瑞士央行和国际货币基金组织准备减少白银储备就成为近期国际现货白银投资市场银价下滑的主要原因。
本文来源： 大田环球贵金属
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