Translate the following English sentence to French:
"However, I have now spoken about updating the VAT system, which means that I can now turn to Mr Helmer and say that I am well aware that these are sensitive issues, I am well aware of the importance accorded to taxation, in the name of national sovereignty, and to the matter of voting upon taxes and, in particular, upon the rates of taxation. After all, I did have a seat in the parliament of my own country for twenty-two years."
Mais je vous ai parlé de la modernisation de la TVA, ce qui permet de faire la transition et de dire à M. Helmer : je sais bien que ce sont là des questions délicates, je sais l' importance que l' on attache, au nom de la souveraineté nationale, à la fiscalité, au fait de voter l' impôt et, notamment, de voter les taux : j' ai siégé pendant vingt-deux ans au parlement dans mon propre pays.