Year	Percent
1950	14.56156
1955	14.75609
1960	13.92927
1965	17.88541
1970	15.63409
1975	14.85149
1980	13.01417
1985	12.17143
1990	12.23494
1995	11.76121
2000	11.72958
2005	10.6265
2010	8.71291
2015	8.96917
2020	8.50195
2025	8.06678
2030	7.52115
2035	7.1348
2040	6.83532
2045	6.21479
2050	5.68363
2055	5.397
2060	5.28447
2065	5.23227
2070	5.14271
2075	5.01397
2080	4.88212
2085	4.80536
2090	4.81282
2095	4.85031
2100	4.8747