text: For comparison towards the commission's structural balance calculation scheme, the UK's CACB balance was found in average to be 1–2% higher than the structural budget balance figure for all medium-term periods reported since 1998, simply because the CACB is equal to: "Structural budget balance" + "Public sector net investment" (between 1-2% when averaged over five years) + "reversed adjustment for one-off revenues/expenditures" (close to 0% when averaged over five years).The so-called sustainable investment rule (also applying for 1998–2008), demanded that "Public sector net debt as a proportion of GDP" should be held over the economic cycle at a stable level beneath a 40%-limit. With this target being set in "net debt", it differed from the SGP's 60%-target which was related to "gross debt". When it was evident the UK business cycle stretching from 1997 to 2006 had ended, the UK government found that both its "Golden rule" and "Sustainable Investment rule" had been attained across this specific cycle. 