Question: What is the longest-running number one single in New Zealand since Smashproof's song "Brother".
About the article "Party Rock Anthem", section "Chart and sales performance".

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Smashproof's "Brother" was the longest-running song in 2009, peaked at number one in eleven weeks in a row.
The Black Eyed Peas's "I Gotta Feeling" and Keri Hilson's "Knock You Down" behind "Brother" for longest-running at number one, with 9 weeks and 6 weeks.
Beyoncé's "Halo" was the longest-running in the chart this year, spent 33 weeks inside the chart.
Black Eyed Peas' "I Gotta Feeling" and Smashproof's "Brother" tied in the second place, with 29 weeks and Taylor Swift's "Love Story" in the third place with 27 weeks.
Key  – Single of New Zealand origin  
The song reached number one on the "Billboard" Hot 100, becoming the duo's first number one hit in the US, and remained there for six straight weeks.
The song spent 68 weeks on the chart, becoming the third most total weeks on Billboard Hot 100 history.
It topped the 7 million downloads mark in the United States in July 2012, becoming the second fastest song in digital history to reach this plateau (in 68 weeks) just behind Adele's "Rolling in the Deep" which achieved it in 67 weeks, and the third-biggest selling digital single since Nielsen SoundScan began tracking digital sales in 2003.
It has also sold 7,695,000 copies in the US as of May 2013, and over one million copies in the UK.
The song spent eleven weeks at number one in New Zealand and ten weeks in Australia.
It is the longest-running number one single in New Zealand since Smashproof's hit single "Brother" in 2009, selling over 45,000 copies there, whereas in Australia, it is the longest-running number-one single since "I Wish I Was a Punk Rocker (With Flowers in My Hair)" by Sandi Thom in 2006 and the best-selling single of 2011.
Certified thirteen-times platinum, it is the second biggest-selling single of all time in Australia, behind only Elton John's "Candle in the Wind 1997".
The longest running number-one single in 2010 so far is Stan Walker's "Black Box", topping the chart for six consecutive weeks of 2010. 
The single spent nine weeks at #1 in the New Zealand chart in 1986, the longest run for any single by a New Zealand artist until "Brother" by Smashproof and Gin Wigmore in 2009. 
In the United States, "New Divide" debuted at number six on the "Billboard" Hot 100, the band's highest debut to date, and their highest peaking song since "In the End" on the chart.
The single dropped sharply to number 39 the week after its release but resurfaced within the top 10 at number nine following the movie's worldwide premiere.
"New Divide" reached number one on both the Alternative Songs chart and the Mainstream Rock Tracks chart.
It has stayed at #1 on Alternative for twelve weeks so far, making it their second longest running number one there (the first being "Numb").
It is the band's eighth number one on the Alternative Songs chart.
The single was certified Platinum by the RIAA in August 2009, and in December 2010 it topped the 2 million mark in paid downloads.
"New Divide" debuted at number three on the Canadian Hot 100 and reached the top ten on the Australian ARIA Charts, debuting at number ten.
'New Divide' has since become Linkin Park's highest charting song in Australia, peaking at #3 on the Aria Top 50 Singles Chart.
It reached platinum in Australia after 15 weeks on the chart selling over 70,000 sales.
It left the chart after 21 weeks making it the 587th best ever song on the ARIA chart.
It has also reached #2 on the New Zealand RIANZ chart and was certified Gold after 12 weeks, selling over 7,500 copies.
The song went platinum in New Zealand and the left the chart after 20 weeks.
"New Divide" has been successful worldwide.
The song peaked at number 19 on the UK Singles Chart, and number 1 on the UK Rock Charts.
In Germany it reached #4, tying it as their highest peaking song there.
It is the band's highest peaking song in Finland, reaching #3.
It also reached the top twenty in Italy, Turkey, Sweden, and Switzerland.