Art market tracker Beautiful Asset Advisors also reckons that sold lots in the two auctions for which there were prior purchase price data generated an average compound annual return of just over 6 per cent ( with an average 14-year holding period ). 从事艺术品市场数据分析的美丽资产咨询公司(BeautifulAssetAdvisors)也认为,在上述两场拍卖中售出的具有以往买价数据的艺术品年均复合回报率略高于6%(平均持有时间达14年)。