Helen Elizabeth Clark is a New Zealand politician who served as the 37th Prime Minister of New Zealand from 1999 to 2008, and was the Administrator of the United Nations Development Programme from 2009 to 2017. She was New Zealand's fifth-longest-serving prime minister, and the second woman to hold — Wikipedia
The time period for further statistics is the same as in the graph above. Retweets are included. For the word cloud, the most common words in a language and numbers were eliminated, and words were converted to lowercase.