美國皮尤研究中心高級人口統計學者康拉德·哈克特博士（Dr Conrad Hackett）研究全球宗教群體規模。
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"It's true the Netherlands has high productivity and works fewer hours," says Daniela Glocker, an economist on the Netherlands desk at the OECD, "but what we've seen over the past 15 years is that it [productivity] hasn't grown.
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