很簡單,用CIA Worldbook 2007的數據,用GDP based on PPP 除以 Nominal GDP based on exchange rate. 所有數據以美元計價,所以美國的基數是1. 數字越大,表示該國貨幣越undervalued, 購買力越強。基本規律是,北歐,西歐發達國家排名靠前,亞洲非洲國家偏後,中國是3.83,也就是說用同樣的錢在美國可以買到一個單位,而在中國可以買到3.83個單位的貨物或服務,即一美元在美國的購買力大約相當於在中國的兩個人民幣。這個序列和 nominal per capta GDP 幾乎是perfectly posotively correlated. 和BigMac Index也基本一致。
當然,籃子裏的貨物和權重不同,得出的結果也會有一些區別,比如說有人喜歡吃牛排,有人喜歡吃煎餅果子,有人喜歡開寶馬,有人喜歡坐地鐵,有人喜歡自己割草打掃衛生,有人喜歡雇三個保姆。但這些數字應該是對普通人,對國計民生來說最公正,最精確的估計了。
Norway 0.645040241
Denmark 0.705432977
Switzerland 0.729011628
Luxembourg 0.744299065
Iceland 0.763570108
Ireland 0.788514851
Sweden 0.809341383
Kuwait 0.828571429
Netherlands 0.847234043
Finland 0.865652174
France 0.865652174
Japan 0.928771285
Venezuela 1.291692737
Zambia 1.324426597
Trinidad and Tobago 1.328568421
Estonia 1.574873737
Panama 1.587301587
Czech Republic 1.594636556
Oman 1.602083333
Chile 1.610013055
Dominica 1.636363636
Poland 1.668387097
Hungary 1.741062562
Brazil 1.754919355
Slovakia 1.758372922
Guatemala 1.810142857
Côte d'Ivoire 1.814015611
Grenada 1.836734694
Belize 1.869158879
Lithuania 1.909583333
Romania 1.910884354
Fiji 1.923666667
Russia 1.954022989
Albania 1.955944334
Benin 2.224165815
Algeria 2.249829669
Georgia 2.311688312
South Africa 2.316746575
Costa Rica 2.354593599
Jordan 2.363333333
Djibouti 2.395804771
Botswana 2.425186722
Chad 2.524833317
Bulgaria 2.596
Belarus 2.606877606
Mali 2.608124969
Tanzania 2.61226108
Morocco 2.634294294
Namibia 2.673873518
Syria 2.696348461
Mauritius 2.750304083
Bolivia 2.754604811
Armenia 2.756697467
Dominican Republic 2.758546656
Colombia 2.767465327
Mongolia 2.801101824
Indonesia 2.844079143
Samoa 2.874375
Iran 2.949557268
Honduras 2.966248038
Cape Verde 2.967139001
Thailand 2.971137255
Papua New Guinea 3.004215686
Tunisia 3.025
Comoros 3.064410224
Burkina Faso 3.074782302
Moldova 3.156490385
Niger 3.171055825
Solomon Islands 3.17952381
Argentina 3.1815625
Azerbaijan 3.190714286
Haiti 3.305834018
Pakistan 3.403835307
Egypt 3.428143713
Paraguay 3.582172491
Madagascar 3.678164832
Mauritania 3.743101545
Sierra Leone 3.748844981
Ukraine 3.825757576
China 3.831730769
Sri Lanka 3.973633932
Kyrgyzstan 3.975148515
Tajikistan 4.024390244
Laos 4.029733805
Philippines 4.03511811
Tonga 4.0554
Togo 4.161411053
Guyana 4.275832622
Nicaragua 4.309313725
Guinea-Bissau 4.316428512
Uzbekistan 4.328909078
Lesotho 4.448051948
São Tomé and Príncipe 5.514268456
Nepal 5.71340694
Kiribati 6.038636364
Suriname 6.048773585
Cambodia 6.211208332
Gambia, The 6.261061947
Burundi 6.31127451