Group 1, Central.
Item 1, 1990 16.7.
Item 2, 2000 15.6.
Group 2, 250,000.
Item 1, 1990 17.7.
Item 2, 2000 16.4.
Group 3, Less than.
Item 1, 1990 19.3.
Item 2, 2000 17.1.
Group 4, .
Item 1, 1990 No data.
Item 2, 2000 No data.
Group 5, Adjacent.
Item 1, 1990 19.8.
Item 2, 2000 17.8.
Group 6, Not adj..
Item 1, 1990 21.9.
Item 2, 2000 19.4.
Group 7, Adjacent.
Item 1, 1990 23.4.
Item 2, 2000 20.
Group 8, Not adj..
Item 1, 1990 24.1.
Item 2, 2000 20.7.
Group 9, Adjacent.
Item 1, 1990 24.4.
Item 2, 2000 20.5.
Group 10, Not adj..
Item 1, 1990 26.5.
Item 2, 2000 22.5.