I think this is more of a case study. If you look back, in recent years, there have been many uprising economy stars in Asia. It has been awhile since I opened my Macro book, so I won't be able to be technical. When saving goes up there will be more money to lend out. This means there is more capital to spare, which should encourage businesses to borrow more money. Also, when a country has to obtain its currency like South Africa, they will want people to save more. Asia, such as Japan and Korea, encouraged people to save by implanting banking system in publicly operated areas, such as in elementary, middle, high schools, government operated buildings, and more. They also looked into a long run where they believe by placing in public schools and encouraging them to deposit every week for a good habit. This allowed these two giant countries to increase savings while they were growing. Now, they no longer promote this system since they are the one who are domestically producing, not importing nations. They actually encourage people to spend money in many cases. Especially in Korea, they would call the growth "shop until drop". People would spend so much money that businesses have to boom at some point.