Year	Percent
1950	10.16203
1955	12.19661
1960	12.36076
1965	11.6213
1970	11.62402
1975	10.07107
1980	9.30098
1985	8.26778
1990	7.87014
1995	7.29609
2000	6.51287
2005	5.91994
2010	4.54465
2015	4.64765
2020	4.41322
2025	4.45662
2030	4.57754
2035	4.50248
2040	4.26195
2045	4.08083
2050	4.06748
2055	4.17858
2060	4.32312
2065	4.39587
2070	4.36065
2075	4.29864
2080	4.3014
2085	4.38748
2090	4.50303
2095	4.57232
2100	4.56408