GET /iceland/stats/topics
来自 Statistics Iceland（Hagstofan）的顶层统计数据库。PxWeb 方言；结构与 Statistics Finland / Sweden / Norway 相同。
curl https://nordapi.ee/api/v1/iceland/stats/topics
{
"data": [
{
"dbid": "Atvinnuvegir",
"text": "Atvinnuvegir"
},
{
"dbid": "Efnahagur",
"text": "Efnahagur"
},
{
"dbid": "Ibuar",
"text": "Ibuar"
},
{
"dbid": "Samfelag",
"text": "Samfelag"
},
{
"dbid": "Umhverfi",
"text": "Umhverfi"
}
],
"success": true
}