C.  The need to preserve the stability of the financial system in order to prevent the emergence of “tail risks” to price stability  The best illustration of tail risks to price stability on the downside associated with financial crises comes from the historical experience of the United States during the Great Depression which followed the collapse of the stockmarket and housing bubbles of the second half of the 1920s, and by that of Japan following the collapse of the real estate bubble of the second half of the 1980s. In both cases a dramatic expansion of credit fuelled bubbles which pushed asset prices to dizzying heights. In the case of the 1920s United States, in particular, such credit expansion was associated with a wave of euphoria caused by “new-era” thinking  2  See Richard Dale (2004), The First Crash: Lessons from the South Sea Bubble, Princeton University Press. 3  See Irving Fisher (1933), “The Debt-Deflation Theory of Great Depressions”, Econometrica, Vol. 1(4), pp. 337–357. 2  BIS Review 158/2010  which, in turn, had been ignited by the dramatic wave of technological innovation which swept across the country during that decade. 4 The attempt, on the part of young Federal Reserve, to gently deflate asset prices via interest rates increases backfired, and the result was the 1929 crash, with the associated destruction of a staggering amount of financial wealth, and the injection into the economy of a significant extent of uncertainty.
Higher wage growth would have the opposite effect. Overall, moderate growth in household purchasing power is expected to result in lower consumption growth ahead. A gradual increase in the interest rate will probably curb activity in the housing market. Housing investment is expected to grow through this year, although less rapidly than last year. Housing investment growth will thereafter moderate further, and may be somewhat reduced towards the end of the projection period. House price inflation is expected to slow. Household indebtedness has increased in tandem with high activity in the housing market. Growth in household debt (C2) has abated somewhat in recent months, but remains at a high level. Higher interest rates and lower house price inflation will gradually reduce household debt growth in the next few years. Growth in credit to mainland enterprises has also shown a sharp increase over the past year, partly reflecting increased fixed investment. With prospects of continued high capacity utilisation in the Norwegian economy, solid profitability, ample liquidity and a high level of optimism among enterprises, strong growth in investment is expected again this year. As economic growth gradually slows, investment growth is also expected to moderate. Monetary policy assessments and strategy Monetary policy is oriented towards a gradual increase in the interest rate – in small, not too frequent steps – towards a more normal level.