Out of the possible 2000 $20 plaques, 439 (21.95%)have been registered. 49 of these are below the 201 serial number.

Out of the possible 500 $50 plaques, 59 (11.89%) have been registered. 17 of these below the 201 serial number.

Out of the possible 1000 $100 plaques, 214 (42.80%) have been registered. 42 of these below the 201 serial number.

Out of the possible 500 $500 plaques, 60 (12.00%) have been registered. 27 of these below the 201 serial number.

Out of the possible 200 $1000 plaques, 24 (12.00%) have been registered. All 24 of these below the 201 serial number because there is only 200 anyway !

And out of the total of 4200 plaques, 796 (18.95%) have been registered. My total came up different from Jim's so I might be wrong somewhere.