Year	Percent
1950	12.17817
1955	10.49877
1960	9.80524
1965	10.85041
1970	11.07243
1975	10.67997
1980	9.28397
1985	8.64
1990	8.31997
1995	8.16004
2000	7.56682
2005	7.0196
2010	6.56447
2015	6.26287
2020	6.25281
2025	5.88083
2030	5.54873
2035	5.32045
2040	5.17343
2045	5.06992
2050	5.00766
2055	4.93774
2060	4.85125
2065	4.7731
2070	4.72546
2075	4.71348
2080	4.71847
2085	4.72132
2090	4.71422
2095	4.69945
2100	4.68631