Year	Percent
1950	10.35026
1955	11.2716
1960	14.13647
1965	13.92167
1970	13.55139
1975	13.56539
1980	13.31372
1985	12.93994
1990	12.66065
1995	11.36819
2000	10.12127
2005	9.9179
2010	10.11217
2015	9.0019
2020	7.99221
2025	7.58728
2030	7.33566
2035	7.10423
2040	6.79306
2045	6.44577
2050	6.11079
2055	5.8778
2060	5.75463
2065	5.67522
2070	5.58685
2075	5.47662
2080	5.37505
2085	5.30416
2090	5.27588
2095	5.26581
2100	5.25155