Although the specifics vary across central banks, the approaches outlined have several important common elements. We each have taken actions to provide more financing at terms longer than overnight. We each have chosen to auction funding against a broader range of collateral, collateral other than government securities, and in our case with a broader set of counterparties. And we have activated swap lines to help the relevant central banks provide liquidity in dollars in their markets. The initial spark to the pressures we observe in markets today was the sharp deterioration in the value of nonprime mortgage securities and the resulting increase in uncertainty about the value of a much larger amount of financial assets exposed to that risk. This was magnified by a substantial increase in uncertainty about the economic outlook and the consequences of that uncertainty for asset values and credit losses. Financial institutions faced a sharp drop in demand for a range of assets, impairing the securitization market as a source of funding. And a substantial amount of these illiquid assets were held in vehicles with implicit or explicit liquidity guarantees provided by banks. This produced a large unexpected increase in demand for funding from banks at the same time banks confronted a reduced capacity to raise financing. As market participants have adjusted to what has been a very acute change in expectations about economic and credit risk, they have become more cautious in how they use their liquidity and capital.
Can households pay for consumer goods with debit cards, cheques or credit cards, or do they have to carry significant amounts of cash with them? Can workers in urban areas transfer money to their rural families by simply sending an SMS, or do they have to carry it with them on a dangerous bus ride? Particularly in Africa, where distances are vast and security is often a concern, the availability of non-cash payment instruments can increase the returns to economic activity for businesses and households. Figure 3 shows that today, most economies in Africa are still strongly cash based. Both in sub-Saharan and northern Africa, more than one-third of funds available for immediate payments are in cash form. The notable exception is South Africa where the level of non-cash money is above 80%, and thus similar to that of Switzerland. Developments over the past 15 years show a promising picture for other countries on the continent as well. Since 1995, the share of non-cash money has increased from 50 to 60 percent in sub-Saharan Africa, and 55 to 65 percent in North Africa. This mirrors the increased availability of electronic payment instruments available to businesses, but also to households.