currency     code    entry erm ii central rate official target date
0                            bulgarian lev      bgn               -      1.95583                    -
1                            croatian kuna      hrk               -            -                    -
2                             czech koruna      czk               -            -                    -
3                             danish krone      dkk  1 january 1999      7.46038     formal opt - out
4                         hungarian forint      huf               -            -                    -
5                             latvian lats      lvl      2 may 2005     0.702804       1 january 2014
6                         lithuanian litas      ltl    28 june 2004      3.45280       1 january 2015
7                             polish złoty      pln               -            -                    -
8                             romanian leu      ron               -            -                    -
9                            swedish krona      sek  not considered            -   de facto opt - out
10  british pound sterling gibraltar pound  gbp gip  not considered            -     formal opt - out

Table as JSON:
{"currency":{"0":"bulgarian lev","1":"croatian kuna","2":"czech koruna","3":"danish krone","4":"hungarian forint","5":"latvian lats","6":"lithuanian litas","7":"polish złoty","8":"romanian leu","9":"swedish krona","10":"british pound sterling gibraltar pound"},"code":{"0":"bgn","1":"hrk","2":"czk","3":"dkk","4":"huf","5":"lvl","6":"ltl","7":"pln","8":"ron","9":"sek","10":"gbp gip"},"entry erm ii":{"0":"-","1":"-","2":"-","3":"1 january 1999","4":"-","5":"2 may 2005","6":"28 june 2004","7":"-","8":"-","9":"not considered","10":"not considered"},"central rate":{"0":"1.95583","1":"-","2":"-","3":"7.46038","4":"-","5":"0.702804","6":"3.45280","7":"-","8":"-","9":"-","10":"-"},"official target date":{"0":"-","1":"-","2":"-","3":"formal opt - out","4":"-","5":"1 january 2014","6":"1 january 2015","7":"-","8":"-","9":"de facto opt - out","10":"formal opt - out"}}