text: Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
  ### Context:
  CREATE TABLE table_name_52 (year INTEGER, category VARCHAR)
  ### Question:
  What was the total number of years than had best improved singer (躍進歌手)?
  ### Answer:
  SELECT SUM(year) FROM table_name_52 WHERE category = "best improved singer (躍進歌手)"