Purchasing power stability achieved through traditionally low inflation, low long-term capital costs, a good investment climate, sound public finances and almost no labour strikes guarantee the prosperity and stability of the Swiss economy. The strength of the Swiss economy is largely due to its international outreach and strong intertwining with the economies of other countries. Switzerland has one of the highest export rates as a percentage of gross domestic product. Highly specialised and flexible small and medium-sized companies characterise the technologically advanced industrial sector. With a per capita gross national product ranking the second highest in the world, Switzerland is a highly attractive market and economic powerhouse with a highly competitive export sector.