Second, because both climate change and financial instability may threaten our ability to deliver on this primary mandate, we shall take their consequences into account, but with full credibility and transparency in our  Page 9 sur 9 models and actions/tools. Third, we should take care to avoid overpromising, as there is no world in which central banks alone can address those issues, starting with the absolute necessity of an adequate carbon price. Central banks have increased capacities, but they still have limits. This is a piece of wisdom we must never forget. A standard Phillips curve approach provides a simple narrative of the path of euro area inflation over the last 20 years. Let me describe you briefly the exercise: HICP inflation is regressed on (i) a variable of economic slack, (ii) oil prices in euros, (iii) the prices of agricultural commodities in euros, and (iv) a lagged term of inflation measuring its inertia. In two separate specifications, the economic slack variable is (i) the output gap estimated by the European Commission, or (ii) the unemployment rate (ILO concept). The equations are estimated on quarterly data ranging from 1998 to 2019. For more details on reduced-form Phillips curve models used at the Banque de France, see Chatelais, De Gaye and Kalantzis (2015) “Low inflation in the euro area: import prices and domestic slack », Rue de la Banque 6, and Berson, De Charsonville, Diev, Faubert, Ferrara, Guilloux-Nefussy, Kalantzis, Lalliard, Matheron and Mogliani (2018) “Does the Phillips curve still exist?”, Rue de la Banque 56.
In this way, we ensure that SARON and the other secured short-term money market rates remain close to the now positive SNB policy rate. To absorb liquidity by way of open market operations, we will use two proven monetary policy instruments: SNB Bills and repo transactions. Participants in the Swiss franc money market are familiar with both instruments. We have used repo transactions regularly in previous years. SNB Bills are debt certificates issued by the SNB, typically with a term of up  1  Further information is available in the ‘Instruction sheet governing interest on sight deposits’. Page 1/2  Zurich, 22 September 2022 Andréa M. Maechler  News conference  to one year. We last used SNB Bills for the implementation of monetary policy in 2011 and have since conducted tests to ensure operational readiness. We expect the volume of SNB Bills issued to increase within a short period of time on the back of the weekly auctions. The new interest rates on sight deposits apply as of tomorrow. The open market operations to absorb liquidity are being conducted with immediate effect. To ensure that our monetary policy is being implemented effectively, we will subject the instruments used to regular review. Further adjustments may be made if necessary. Page 2/2