Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Record | Athlete | Nation | Venue | Date | # |
| --- | --- | --- | --- | --- | --- |
| 4.05 m (13 ft 31⁄4 in) | Sun Caiyun | China | Nanjing, China | 21 May 1992 | 1 |
| 4.08 m (13 ft 41⁄2 in) | Sun Caiyun | China | Taiyuan, China | 18 May 1995 | 2 |
| 4.08 m (13 ft 41⁄2 in) | Zhong Guiqing | China | Taiyuan, China | 18 May 1995 | 1 |
| 4.10 m (13 ft 51⁄4 in) | Daniela Bártová | Czech Republic | Ljubljana, Slovenia | 21 May 1995 | 1 |
| 4.12 m (13 ft 6 in) | Daniela Bártová | Czech Republic | Duisburg, Germany | 18 June 1995 | 2 |
| 4.13 m (13 ft 61⁄2 in) | Daniela Bártová | Czech Republic | Wesel, Germany | 24 June 1995 | 3 |
| 4.14 m (13 ft 63⁄4 in) | Daniela Bártová | Czech Republic | Gateshead, England | 2 July 1995 | 4 |
| 4.15 m (13 ft 71⁄4 in) | Daniela Bártová | Czech Republic | Ostrava, Czech Republic | 6 July 1995 | 5 |
| 4.16 m (13 ft 73⁄4 in) | Daniela Bártová | Czech Republic | Feldkirch, Austria | 14 July 1995 | 6 |
| 4.17 m (13 ft 8 in) | Daniela Bártová | Czech Republic | Feldkirch, Austria | 15 July 1995 | 7 |
| 4.18 m (13 ft 81⁄2 in) | Andrea Müller | Germany | Zittau, Germany | 5 August 1995 | 1 |
| 4.20 m (13 ft 91⁄4 in) | Daniela Bártová | Czech Republic | Köln, Germany | 18 August 1995 | 8 |
| 4.21 m (13 ft 91⁄2 in) | Daniela Bártová | Czech Republic | Linz, Austria | 22 August 1995 | 9 |
| 4.22 m (13 ft 10 in) | Daniela Bártová | Czech Republic | Salgotarjan, Hungary | 11 September 1995 | 10 |
| 4.25 m (13 ft 111⁄4 in) | Emma George | Australia | Melbourne, Australia | 30 November 1995 | 1 |
| 4.28 m (14 ft 01⁄2 in) | Emma George | Australia | Perth, Australia | 17 December 1995 | 2 |
| 4.41 m (14 ft 51⁄2 in) | Emma George | Australia | Perth, Australia | 28 January 1996 | 3 |
| 4.42 m (14 ft 6 in) | Emma George | Australia | Reims, France | 29 June 1996 | 4 |
| 4.45 m (14 ft 7 in) | Emma George | Australia | Sapporo, Japan | 14 July 1996 | 5 |
| 4.50 m (14 ft 9 in) | Emma George | Australia | Melbourne, Australia | 8 February 1997 | 6 |
| 4.55 m (14 ft 11 in) | Emma George | Australia | Melbourne, Australia | 20 February 1997 | 7 |
| 4.57 m (14 ft 113⁄4 in) | Emma George | Australia | Auckland, New Zealand | 21 February 1998 | 8 |
| 4.58 m (15 ft 01⁄4 in) | Emma George | Australia | Melbourne, Australia | 14 March 1998 | 9 |
| 4.59 m (15 ft 01⁄2 in) | Emma George | Australia | Brisbane, Australia | 21 March 1998 | 10 |
| 4.60 m (15 ft 1 in) | Emma George | Australia | Sydney, Australia | 20 February 1999 | 11 |
| 4.60 m (15 ft 1 in) | Stacy Dragila | United States | Sevilla, Spain | 21 August 1999 | 1 |
| i 4.60 m (15 ft 1 in) | Stacy Dragila | United States | Pocatello, U.S. | 19 Feb 2000 | 2 |
| i 4.62 m (15 ft 13⁄4 in) | Stacy Dragila | United States | Atlanta, U.S. | 3 Mar 2000 | 3 |
| 4.63 m (15 ft 21⁄4 in) | Stacy Dragila | United States | Sacramento, U.S. | 23 July 2000 | 4 |
| i 4.63 m (15 ft 21⁄4 in) | Stacy Dragila | United States | New York City, U.S. | 2 Feb 2001 | 5 |
| i 4.64 m (15 ft 21⁄2 in) | Svetlana Feofanova | Russia | Dortmund, Germany | 11 February 2001 | 1 |
| i 4.66 m (15 ft 31⁄4 in) | Stacy Dragila | United States | Pocatello, U.S. | 17 Feb 2001 | 6 |
| i 4.70 m (15 ft 5 in) | Stacy Dragila | United States | Pocatello, U.S. | 17 Feb 2001 | 7 |
| 4.70 m (15 ft 5 in) | Stacy Dragila | United States | Pocatello, U.S. | 27 April 2001 | 8 |
| 4.71 m (15 ft 51⁄4 in) | Stacy Dragila | United States | Palo Alto, U.S. | 9 June 2001 | 9 |
| 4.81 m (15 ft 91⁄4 in) | Stacy Dragila | United States | Palo Alto, U.S. | 9 June 2001 | 10 |
| 4.82 m (15 ft 93⁄4 in) | Yelena Isinbayeva | Russia | Gateshead, England | 13 July 2003 | 1 |
| i 4.83 m (15 ft 10 in) | Yelena Isinbayeva | Russia | Donets'k, Ukraine | 15 February 2004 | 2 |
| i 4.85 m (15 ft 103⁄4 in) | Svetlana Feofanova | Russia | Athens, Greece | 22 February 2004 | 2 |
| i 4.86 m (15 ft 111⁄4 in) | Yelena Isinbayeva | Russia | Budapest, Hungary | 6 March 2004 | 3 |
| 4.87 m (15 ft 111⁄2 in) | Yelena Isinbayeva | Russia | Gateshead, England | 27 June 2004 | 4 |
| 4.88 m (16 ft 0 in) | Svetlana Feofanova | Russia | Heraklion, Greece | 4 July 2004 | 3 |
| 4.89 m (16 ft 01⁄2 in) | Yelena Isinbayeva | Russia | Birmingham, England | 25 July 2004 | 5 |
| 4.90 m (16 ft 03⁄4 in) | Yelena Isinbayeva | Russia | London, England | 30 July 2004 | 6 |
| 4.91 m (16 ft 11⁄4 in) | Yelena Isinbayeva | Russia | Athens, Greece | 24 August 2004 | 7 |
| 4.92 m (16 ft 11⁄2 in) | Yelena Isinbayeva | Russia | Brussels, Belgium | 3 September 2004 | 8 |
| 4.93 m (16 ft 2 in) | Yelena Isinbayeva | Russia | Lausanne, Switzerland | 5 July 2005 | 9 |
| 4.95 m (16 ft 23⁄4 in) | Yelena Isinbayeva | Russia | Madrid, Spain | 16 July 2005 | 10 |
| 4.96 m (16 ft 31⁄4 in) | Yelena Isinbayeva | Russia | London, England | 22 July 2005 | 11 |
| 5.00 m (16 ft 43⁄4 in) | Yelena Isinbayeva | Russia | London, England | 22 July 2005 | 12 |
| 5.01 m (16 ft 5 in) | Yelena Isinbayeva | Russia | Helsinki, Finland | 9 August 2005 | 13 |
| 5.03 m (16 ft 6 in) | Yelena Isinbayeva | Russia | Rome, Italy | 11 July 2008 | 14 |
| 5.04 m (16 ft 61⁄4 in) | Yelena Isinbayeva | Russia | Fontvieille, Monaco | 29 July 2008 | 15 |
| 5.05 m (16 ft 63⁄4 in) | Yelena Isinbayeva | Russia | Beijing, China | 18 August 2008 | 16 |
| 5.06 m (16 ft 7 in) | Yelena Isinbayeva | Russia | Zürich, Switzerland | 28 August 2009 | 17 |
Question:
how long did sun caiyun hold her record position for pole vaulting?
Answer:
3 years