"Figure 7: Differences in HH and NPISH total long-term debt securities estimates between the updated CSDB-extended pre-ESA 1995 and ESA 2010 BB16 data sets, 1987-1997","" "","" "","" "Notes","1. BB is Blue Book. 2. CSDB is the ONS Central Shared Database. 3. ESA is European System of Accounts. 4. HH is households. 5. NPISH is non-profit institutions serving households" "Unit","£1,000 millions" "","" "Year","The ESA 2010 BB16 Data Set (1987 to 1997) ","The CSDB-extended pre-ESA 1995 data set " "1987","24.672","27.343" "1988","20.97","24.299" "1989","18.503","20.121" "1990","20.299","20.269" "1991","21.981","21.951" "1992","30.852","30.903" "1993","33.654","33.812" "1994","31.428","31.398" "1995","41.262","41.261" "1996","44.832","44.832" "1997","56.123","55.903"