May 19，The World Bank releases the report "Purchasing Power Parity and the Size of the World Economy - Results of the 2017 bet365 apuestas"。The report is measured using the purchasing power parity method，Drawed a series of important conclusions。Report Display，Calculated based on data submitted by 176 countries and regions，2017，Calculated based on purchasing power parity method，The total economic size of these economies is 119. trillion。Among them，China’s GDP in 2017 was 19. trillion，Ranked first in the world (176 economies)，Accounting for 16% of the world economy.4%。

　　Improving bet365 apuestas work

The bet365 apuestas is one of the largest statistical practices in the world，It is also a complex international statistical work。In recent years，Their working methods are becoming more and more perfect。2017 bet365 apuestas uses the latest technology，Strengthened data quality assurance，Introduced a well-documented and more transparent process to produce statistical results。

The working methods of the bet365 apuestas mainly include three aspects。The first is to determine the final expenditures on GDP under the definition of the System of National Accounts (SNA)。The second is to select a range of products and services for pricing，Selected products and services as commodities，Should be comparable across economies，And can represent an important part of final procurement in each economy。The third is the method of calculating purchasing power parity，When making statistics, compare within the region first，Then make a cross-regional global comparison。

Every bet365 apuestas has a reference year，Each economy participating in the project must provide various required data for the reference year，Mainly includes: the price of selected goods from clearly defined goods；Conforming to common classification、National Accounts Expenditure Details in Local Currency；Market exchange rate and population data。These data are used to calculate the results of various data indicators。Price and spending data are used to calculate purchasing power parity and real spending；Purchasing power parity and market exchange rates are used to calculate the price level index；The economy’s total population and real spending are used to calculate real spending per capita。Among them，Price and expenditure data cover all final goods and services that make up the gross national product。

　　Accurate application of bet365 apuestas method

International bet365 apuestas projects are largely based on purchasing power parity calculations。And net exports、Inventory changes and acquisition and disposal of valuable items，The price data of these three aspects are not included in the statistics。

In short，The price corresponding value is obtained by comparing individual commodities for each basic item in two different economies，It is a bilateral bet365 apuestas。The use of direct PPP and indirect PPP is a multilateral bet365 apuestas。Purchasing power parity between any two economies，The bet365 apuestas will be affected by the purchasing power parity between itself and other economies。This means in bet365 apuestas，Any change in the economy will change the purchasing power parity between any two economies。

Report submitted，Multilateral bet365 apuestas index can be calculated by different methods，The choice of method is based on considerations of transitivity and base invariance。Transitiveness means，Calculate bet365 apuestas between two economies directly or indirectly through a third economy，The results should all be the same。The immutability of the basic country refers to，This method can pass the "National Exchange Inspection"，No matter which economy is chosen as the base country to construct the bet365 apuestas index，The results of international comparisons should be consistent。

　　Absorb bet365 apuestas technologies and take advantage of them

There is no need to follow established procedures to conduct an bet365 apuestas，It is not necessarily limited to statistics，But we must continue to improve ourselves according to the changes of the times，And exert a radiating effect on a wider level，Thus promoting economic and social development。

Report submitted，Currently, countries around the world are experiencing economic impacts to varying degrees，This will affect the scale and distribution of the global economy in the future。In addition，Under the bet365 apuestas，The methods and processes of collecting and analyzing data and information will change。Timely and reliable economic data at the academic level and decision-making impact level，will further play a key role、Instrumental role。

The next phase of the bet365 apuestas will be carried out with the launch of the 2021 cycle，And respond to new developments in the world situation。In this cycle，The bet365 apuestas will work as usual，The list of included items will be updated at the same time，To reflect new developments in consumption patterns。Report thinks，The next phase of the project needs to incorporate new technologies，Innovate in data collection solutions and product pricing。Web scraping、Crowdsourcing、Administrative Record Data Application、Machine learning and other methods and means，Hopefully give play to their respective strengths。

In addition，For the price of a basket of goods and services in the bet365 apuestas，Project parties need to respond quickly to changes in consumer purchasing patterns and the reflection of these changes in the system of national accounts。In terms of organizational management，In view of the fact that the bet365 apuestas has a cycle of 3 years，The research agenda will continue to move forward under the guidance of the Technical Advisory Group，To ensure that the solution meets user needs。